The best source is probably [Apple&#39;s official documentation][1]. The specific variable you are looking for is CONFIGURATION.


  [1]: http://help.apple.com/xcode/mac/8.0/#/itcaec37c2a6

[Here&#39;s a list of the environment variables][1]. I think you might want `CURRENT_VARIANT`. See also `BUILD_VARIANTS`.

[1]: http://maxao.free.fr/xcode-plugin-interface/build-settings.html#variables

They&#39;re not **all** documented. For example, you won&#39;t find `ARCHIVE_PATH`, `MARKETING_VERSION` (the version string set in Xcode) in Naaff&#39;s  or smorgan&#39;s answer. These 2 are very common pieces of information someone would need! Here&#39;s a list of all of them I got: https://gist.github.com/ben-xD/c063b0ca2c33684de1eb379bb9d6405d


How I got them
--------------

**I found the best way was to print them** using `set`, I just wrote [this](https://stackoverflow.com/questions/66852827/is-there-an-environment-variable-for-the-archive-directory-in-xcode) including a method to list all the environment variables available.


Add this to your run script (either Archive post run script, or your build phases run script, etc.):

```bash
#!/bin/sh
exec &gt; ${PROJECT_DIR}/environment_variables.log 2&gt;&amp;1
set
```

Look in `environment_variables.log` and you&#39;ll see them all. 

There have been occasions where I would want to override a method in a class with an extension method.  Is there any way to do that in C#?

For example:

    public static class StringExtension
    {
        public static int GetHashCode(this string inStr)
        {
            return MyHash(inStr);
        }
    }

A case where I&#39;ve wanted to do this is to be able to store a hash of a string into a database and have that same value be used by all the classes that use the string class&#39;s hash (i.e. Dictionary, etc.)  Since the built-in .NET hashing algorithm is not guaranteed to be compatible from one version of the framework to the next, I want to replace it with my own.

There are other cases I&#39;ve run into where I&#39;d want to override a class method with an extension method as well so it&#39;s not just specific to the string class or the `GetHashCode` method.

I know I could do this with subclassing off an existing class but it would be handy to be able to do it with an extension in a lot of cases.



Is there any way in C# to override a class method with an extension method?

&gt; **Possible Duplicate:**  
&gt; [Why Dictionary is preferred over hashtable in C#?](https://stackoverflow.com/questions/301371/why-dictionary-is-preferred-over-hashtable-in-c)  

&lt;!-- End of automatically inserted text --&gt;

What is the difference between Dictionary and Hashtable. How to decide which one to use?

Difference between Dictionary and Hashtable

In Xcode, I know that you can get variables such as `PROJECT_DIR` to use in some situations, such as a run script build phase. I am wondering if it&#39;s possible to get the build type (i.e., *Release* or *Debug*). Any ideas?




Xcode variables

In Xcode, I know that you can get variables such as <code>PROJECT_DIR</code> to use in some situations, such as a run script build phase. I am wondering if it's possible to get the build type (i.e., Release or Debug). Any ideas?

I&#39;m doing a presentation on debugging in Xcode and would like to get more information on using NSLog efficiently.

In particular, I have two questions:

 - is there a way to easily NSLog the current method&#39;s name / line number?
 - is there a way to &quot;disable&quot; all NSLogs easily before compiling for release code?




How to print out the method name and line number and conditionally disable NSLog?

What I did:
-----------

I have a script that

1. Read some configuration files to generate source code snippets
2. Find relevant Objective-C source files and
3. Replace some portions of the source code with the generated code in step 1.

and a Makefile that has a special timestamp file as a make target and the configuration files as target sources:

    SRC = $(shell find ../config -iname &quot;*.txt&quot;)
    STAMP = $(PROJECT_TEMP_DIR)/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME).stamp
    $(STAMP): $(SRC)
    	python inject.py
    	touch $(STAMP)

I added this Makefile as a &quot;Run Script Build Phase&quot; on top of the stack of build phases for the project target.

What happened:
--------------

The script build phase was run before compiling the source.

However, since the script modifies source code during its execution, I needed to build **twice** to get the most recent version of the build product. Here is what I imagine to be happening:

1. 1st run: Xcode collects dependency information ---&gt; no changes
2. 1st run: Xcode runs &quot;Run Script Build Phase&quot; ---&gt; source is changed behind Xcode&#39;s back
3. 1st run: Xcode finishes build, thinking nothing needs to be updated
4. 2nd run: Xcode collects dependency information ---&gt; source has changed, needs rebuild!
5. 2nd run: Xcode runs Run Script Build Phase&quot; ---&gt; everything is up-to-date
6. 2nd run: Xcode proceeds to compilation

After reading [Xcode documentation on Build Phases](http://gemma.apple.com/DOCUMENTATION/DeveloperTools/Conceptual/XcodeBuildSystem/200-Build_Phases/bs_build_phases.html), I tried adding a source file which is known to be updated every time the script is run as the output of &quot;Run Script Build Phases&quot;, but nothing changed. Since the number of configuration files may vary in my project, I don&#39;t want to specify every input and output file.

Question:
---------

How do I make Xcode aware of source file changes made during &quot;Run Script Build Phase&quot;?

### Edit: ###
- Added that I placed the script build phase before the other build phases

Xcode: Running a script before every build that modifies source code directly

I&#39;m looking to be able to have the debugger break when it reaches a particular string match. As an example, I might have something like this:

    Foo myObj = [self gimmeObj];

`myObj` might have a property called `name`. I want the debugger to stop on the assignment when

    [myObj.name isEqualToString:@&quot;Bar&quot;];

How can I set my conditional breakpoint in Xcode to do that?

How to set a conditional breakpoint in Xcode based on an object string property?

Why is **Refactor...** grayed out (disabled) in Xcode?

I&#39;d like to rename a class.

Rename a class in Xcode: Refactor... is grayed out (disabled). Why?

I have a small problem right now. I want to execute a method when the Enter key is pressed in a NSTextField. The user should be able to enter his data and a calculation method should be executed as soon as he hits the enter key. 

Execute an Action when the Enter-Key is pressed in a NSTextField?

Referring on [this question][1], I have a similar -but not the same- problem..

On my way, I&#39;ll have some text file, structured like:

    var_a: &#39;home&#39;
    var_b: &#39;car&#39;
    var_c: 15.5

And I need that python read the file and then create a variable named var_a with value &#39;home&#39;, and so on.

Example:
    
    #python stuff over here
    getVarFromFile(filename) #this is the function that im looking for
    print var_b
    #output: car, as string
    print var_c
    #output 15.5, as number.

Is this possible, I mean, even keep the var type?

Notice that I have the full freedom to the text file structure, I can use the format I like if the one I proposed isn&#39;t the best.

**EDIT**: the ConfigParser can be a solution, but I don&#39;t like it so much, because in my script I&#39;ll have then to refer to the variables in the file with

    config.get(&quot;set&quot;, &quot;var_name&quot;)

But what I&#39;ll love is to refer to the variable directly, as I declared it in the python script...

There is a way to import the file as a python dictionary?

Oh, last thing, keep in mind that I don&#39;t know exactly how many variables would I have in the text file.

**Edit 2**: I&#39;m very interested at stephan&#39;s JSON solution, because in that way the text file could be read simply with others languages (PHP, then via AJAX JavaScript, for example), but I fail in something while acting that solution:

    #for the example, i dont load the file but create a var with the supposed file content
    file_content = &quot;&#39;var_a&#39;: 4, &#39;var_b&#39;: &#39;a string&#39;&quot;
    mydict = dict(file_content)
    #Error: ValueError: dictionary update sequence element #0 has length 1; 2 is required
    file_content_2 = &quot;{&#39;var_a&#39;: 4, &#39;var_b&#39;: &#39;a string&#39;}&quot;
    mydict_2 = dict(json.dump(file_content_2, True))
    #Error:
    #Traceback (most recent call last):
    #File &quot;&lt;pyshell#5&gt;&quot;, line 1, in &lt;module&gt;
    #mydict_2 = dict(json.dump(file_content_2, True))
    #File &quot;C:\Python26\lib\json\__init__.py&quot;, line 181, in dump
    #fp.write(chunk)
    #AttributeError: &#39;bool&#39; object has no attribute &#39;write&#39;

In what kind of issues can I fall with the JSON format?
And, how can I read a JSON array in a text file, and transform it in a python dict?


P.S: I don&#39;t like the solution using .py files; I&#39;ll prefer .txt, .inc, .whatever is not restrictive to one language.


  [1]: https://stackoverflow.com/questions/868112/loading-files-into-variables-in-python

Best way to retrieve variable values from a text file?

Let&#39;s say I have a script like the following:

useless.sh

    echo &quot;This Is Error&quot; 1&gt;&amp;2
    echo &quot;This Is Output&quot; 

And I have another shell script:

alsoUseless.sh

    ./useless.sh | sed &#39;s/Output/Useless/&#39;

I want to capture &quot;This Is Error&quot;, or any other stderr from useless.sh, into a variable. 
Let&#39;s call it ERROR.

Notice that I am using stdout for something. I want to continue using stdout, so redirecting stderr into stdout is not helpful, in this case.

So, basically, I want to do

    ./useless.sh 2&gt; $ERROR | ...

but that obviously doesn&#39;t work.

I also know that I could do

    ./useless.sh 2&gt; /tmp/Error
    ERROR=`cat /tmp/Error`

but that&#39;s ugly and unnecessary.

Unfortunately, if no answers turn up here that&#39;s what I&#39;m going to have to do.

I&#39;m hoping there&#39;s another way.

Anyone have any better ideas?

How to store standard error in a variable

When defining a path to a directory as a variable or constant, should it end with a trailing slash? What is the convention?

`pwd` in Unix shows your current directory without a trailing slash, while the tab complete of `cd /var/www/apps/` includes the trailing slash, which left me unsure.

Should a directory path variable end with a trailing slash?

In another question I posted someone told me that there is a difference between:

    @variable

and:

    variable

in MySQL. He also mentioned how MSSQL has batch scope and MySQL has session scope. Can someone elaborate on this for me?

MySQL: @variable vs. variable. What&#39;s the difference?

I have a class Film, each of which stores a unique ID. In C#, Java etc I can define a static int currentID and each time i set the ID i can increase the currentID and the change occurs at the class level not object level. Can this be done in Objective-C? I&#39;ve found it very hard to find an answer for this.

Objective-C Static Class Level variables

I have a project that contains a single module, and some dependencies.
I&#39;d like to create a jar, in a separate directory, that contains the compiled module. In addition, I&#39;d like to have the dependencies present beside my module.

No matter how I twist IntelliJ&#39;s &quot;build jar&quot; process, the output of my module appears empty (besides a META-INF file).

How to build jars from IntelliJ properly?

I have a multi-module Maven project with a parent project `P` and three sub-modules `A`, `B`, and `C`.  Both `B` and `C` are war projects and both depend on `A`.  

I can type `mvn compile` in `P` and have all of the sub-modules properly compiled. The problem comes when I want to do operations for specific modules.

I&#39;d like to be able to package a war for project `B`, but when I run the package command from `B`&#39;s directory, it complains that it can&#39;t find the dependencies for `A`.  

I understand from this question: https://stackoverflow.com/questions/808516/maven-and-dependent-modules that perhaps Maven isn&#39;t really designed for this type of dependency resolution, but that begs the question of how do I package `B`?  

 1. Do I have to run `mvn package` for the entire project hierarchy when I really just want `B`?  

 2. Do I have to install snapshots of A into my local repository every time I want to package `B`?  

This second scenario isn&#39;t much fun when `A` is still under active development.

Any best practices here?

Maven Modules + Building a Single Specific Module

What does another build tool targeted at Java really get me?

If you use Gradle over another tool, why?


Why use Gradle instead of Ant or Maven?

in my J2EE project I&#39;ve a couple of dependencies, which are not available in any Maven repository, because they&#39;re proprietary libraries. These libraries need to be available at runtime, so that have to be copied to target/.../WEB-INF/lib ...

Right now, I&#39;m listing them as system dependency in my POM, but with this method the problem is, that aren&#39;t being copied to the target build during compilation. Also this method is not very elegant.

So which is the best way to integrate them in Maven?

Note: I don&#39;t want to create my own Maven repository.

Maven: How to include jars, which are not available in reps into a J2EE project?

I need to get a hold of every flag, every switch used in the build process by the Visual Studio binaries. I tried to obtain a verbose output by using `vcbuild`, but I wasn&#39;t able. 

What do I have to do to see everything performed by Visual Studio for me? It&#39;s not necessary to obtain the output in the build window. Anywhere would be fine.

How can I make Visual Studio&#39;s build be very verbose?

This is the error that is thrown by our automated build suite on Windows 2008, while running [ICEs][1] (after migrating from [WiX][2] 2.0 to WiX 3.0):

&gt; LGHT0217: Error executing ICE action &#39;ICE01&#39;. The most common cause of this kind of ICE failure is an incorrectly registered scripting engine. See http://wix.sourceforge.net/faq.html#Error217 for details and how to solve this problem. The following string format was not expected by the external UI message logger: &quot;The Windows Installer Service could not be accessed. This can occur if the Windows Installer is not correctly installed. Contact your support personnel for assistance.&quot;. in light.exe(0, 0)

Additionally, these are the errors that show up in the event log:

&gt; MSIInstaller: Failed to connect to server. Error: 0x80070005
&gt; Product: [ProductName] -- Error 1719. The Windows Installer Service could not be accessed. This can occur if the Windows Installer is not correctly installed. Contact your support personnel for assistance.

Intuitively:

* [VBScript][3] and [JScript][4] were registered under admin.
* Integration service has permissions for the desktop interaction and all the files
* Builds succeed, when executed manually on the same machine by another user or even user logged in as integration account (via [RDP][5])

I&#39;m out of ideas so far.

**How do I solve this problem while keeping ICE validation?**

  [1]: http://msdn.microsoft.com/en-us/library/windows/desktop/aa369554%28v=vs.85%29.aspx
  [2]: http://en.wikipedia.org/wiki/WiX
  [3]: http://en.wikipedia.org/wiki/VBScript
  [4]: http://en.wikipedia.org/wiki/JScript
  [5]: http://en.wikipedia.org/wiki/Remote_Desktop_Protocol


WiX 3.0 throws error 217, while being executed by continuous integration

Rake is a software build tool written in Ruby (like [Ant][1] or [Make][2]), and so all its files are written in this language. Does something like this exist in Python?

  [1]: http://en.wikipedia.org/wiki/Apache_Ant
  [2]: http://en.wikipedia.org/wiki/Make_%28software%29


Is there a Rake equivalent in Python?

I want to execute a command from an Ant buildfile, for each file in a directory.  
I am looking for a platform-independent solution.

How do I do this?

*Sure, I could write a script in some scripting language,
but this would add further dependencies to the project.*

Ant: How to execute a command for each file in directory?

Can we execute a .bat file in post build event command line in visual studio?

I&#39;m starting to use WiX in order to do automated builds to create msi&#39;s of my c# projects and am experiencing the error **&quot;Undefined preprocessor variable &#39;$(var.MyProject.TargetDir)&#39;&quot;**

I am using the latest WiX v3.0.5419. Inside my wxs file I am trying to use pre-processor variables that are listed on this webpage ([**http://blogs.msdn.com/jrock/archive/2008/01/29/complete-list-of-candle-preprocessor-variables.aspx**][1])

    &lt;Component Id=&quot;MyId&quot; Guid=&quot;MyGuid&quot;&gt;
       &lt;File Id=&quot;MyId&quot; Name=&quot;MyName&quot; KeyPath=&quot;yes&quot; 
          Source=&quot;$(var.MyProject.TargetDir)\MyName.dll&quot; /&gt;
    &lt;/Component&gt;

I have added the reference for MyProject to the .wixproj and if I open it up in Notepad I can see the reference.

    &lt;ItemGroup&gt;
      &lt;ProjectReference Include=&quot;..\MyProject.csproj&quot;&gt;
        &lt;Name&gt;MyProject&lt;/Name&gt;
        &lt;Project&gt;{guid}&lt;/Project&gt;
        &lt;Private&gt;True&lt;/Private&gt;
      &lt;/ProjectReference&gt;
    &lt;/ItemGroup&gt;

This is my nant build script that I use to create the msi. Maybe it&#39;s because the .wixproj knows about the project reference which isn&#39;t used in the build?

    &lt;exec basedir=&quot;${tools.wix}&quot; managed=&quot;true&quot; program=&quot;candle.exe&quot;&gt;
      &lt;arg line=&#39;-out &quot;${tools.wix.objfile}&quot;&#39; /&gt;
      &lt;arg value=&quot;../MySetup.wxs&quot; /&gt;
    &lt;/exec&gt;

Can anyone enlighten me on this please?

  [1]: http://blogs.msdn.com/jrock/archive/2008/01/29/complete-list-of-candle-preprocessor-variables.aspx

Content Type	Original Author	Original Content on Stackoverflow
Question	Allyn	View Question on Stackoverflow
Solution 1 - Xcode	smorgan	View Answer on Stackoverflow
Solution 2 - Xcode	Naaff	View Answer on Stackoverflow
Solution 3 - Xcode	Ben Butterworth	View Answer on Stackoverflow

Xcode variables

Xcode Problem Overview

Xcode Solutions

Solution 1 - Xcode

Solution 2 - Xcode

Solution 3 - Xcode

How I got them

Difference between Dictionary and Hashtable

Is there any way in C# to override a class method with an extension method?

Attributions