From 9.3 release notes, it sounds like you&#39;d want to commit.

&gt; Xcode 9.3 adds a new IDEWorkspaceChecks.plist file to a workspace’s
&gt; shared data, to store the state of necessary workspace checks.
&gt; Committing this file to source control will prevent unnecessary
&gt; rerunning of those checks for each user opening the workspace.

[Source][1]


  [1]: https://developer.apple.com/library/content/releasenotes/DeveloperTools/RN-Xcode/Chapters/Introduction.html#//apple_ref/doc/uid/TP40001051-CH1-DontLinkElementID_7

Implementations might differ between the actual sizes of types, but on most, types like unsigned int and float are always 4 bytes. But why does a type always occupy a *certain* amount of memory no matter its value? For example, if I created the following integer with the value of 255

    int myInt = 255;

Then `myInt` would occupy 4 bytes with my compiler. However, the actual value, `255` can be represented with only 1 byte, so why would `myInt` not just occupy 1 byte of memory? Or the more generalized way of asking: Why does a type have only one size associated with it when the space required to represent the value might be smaller than that size?



Why are types always a certain size no matter its value?

Note: This question is for informational purposes only. I am interested to see how deep into Python&#39;s internals it is possible to go with this.

Not very long ago, a discussion began inside a certain [question](https://stackoverflow.com/q/49271187/4909087) regarding whether the strings passed to print statements could be modified after/during the call to `print` has been made. For example, consider the function:

    def print_something():
        print(&#39;This cat was scared.&#39;)

Now, when `print` is run, then the output to the terminal should display:

    This dog was scared.

Notice the word &quot;cat&quot; has been replaced by the word &quot;dog&quot;. Something somewhere somehow was able to modify those internal buffers to change what was printed. Assume this is done without the original code author&#39;s explicit permission (hence, hacking/hijacking).

This [comment](https://stackoverflow.com/questions/49271187/how-to-change-a-string-in-a-function-when-calling-a-function/49271219?noredirect=1#comment85545706_49271219) from the wise @abarnert, in particular, got me thinking:

&gt; There are a couple of ways to do that, but they&#39;re all very ugly, and
&gt; should never be done. The least ugly way is to probably replace the
&gt; `code` object inside the function with one with a different `co_consts`
&gt; list. Next is probably reaching into the C API to access the str&#39;s
&gt; internal buffer. [...]

So, it looks like this is actually possible.

Here&#39;s my naive way of approaching this problem:

    &gt;&gt;&gt; import inspect
    &gt;&gt;&gt; exec(inspect.getsource(print_something).replace(&#39;cat&#39;, &#39;dog&#39;))
    &gt;&gt;&gt; print_something()
    This dog was scared.

Of course, `exec` is bad, but that doesn&#39;t really answer the question, because it does not actually modify anything _during when/after_ `print` is called.

How would it be done as @abarnert has explained it?



Is it possible to &quot;hack&quot; Python&#39;s print function?

I downloaded the newly released Xcode 9.3, I recompiled my workspace and I noticed it produced a new file:

`&lt;mywsname&gt;.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist`

whose contents are:

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;
    &lt;!DOCTYPE plist PUBLIC &quot;-//Apple//DTD PLIST 1.0//EN&quot; &quot;http://www.apple.com/DTDs/PropertyList-1.0.dtd&quot;&gt;
    &lt;plist version=&quot;1.0&quot;&gt;
        &lt;dict&gt;
	        &lt;key&gt;IDEDidComputeMac32BitWarning&lt;/key&gt;
	        &lt;true/&gt;
        &lt;/dict&gt;
    &lt;/plist&gt;

I wonder if this file should be git ignored or committed. I was not able to find any documentation about it.

New file created in Xcode 9.3, &lt;wsname&gt;.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist should it be committed?

I downloaded the newly released Xcode 9.3, I recompiled my workspace and I noticed it produced a new file:
<code>&#x3C;mywsname>.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist</code>
whose contents are:
<pre><code class="hljs language-xml">&#x3C;?xml version="1.0" encoding="UTF-8"?>
&#x3C;!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
&#x3C;plist version="1.0">
 &#x3C;dict>
 &#x3C;key>IDEDidComputeMac32BitWarning&#x3C;/key>
 &#x3C;true/>
 &#x3C;/dict>
&#x3C;/plist>
</code></pre>
I wonder if this file should be git ignored or committed. I was not able to find any documentation about it.

I updgraded from react 16.2 -&gt; 16.3-alpha-1 and react-native 0.52-&gt;0.54 and I get the warning above in the simulator.

Warning : Failed child context type: Invalid child context &#39;virtualizedCell.cellKey&#39; of type &#39;number&#39; supplied to &#39;CellRenderer&#39;, expected &#39;string&#39;

I get the above runtime message after I upgraded to Swift4.1 and Xcode 9.3. Before the upgrade I did not have this message in my console window.

&gt;Status bar could not find cached time string image. Rendering in-process.

comes up every few minutes as long as I have the App running.

It sees to me there is no negative side effect, my App is running, as usual, I have not seen any problems.

I use the standard Status Bar, have not changed to modify it in any way.

**Question 1:** Would there be a problem originating from this warning under situations i have not come across yet?

**Question 2:** Does anyone know how I can get rid of this warning? 

Status bar could not find cached time string image. Rendering in-process

In Xcode, when I try to `Product &gt; Archive &gt; Validate App` I get the error:

&gt; No accounts with iTunes Connect access have been found for the team &quot;TEAM_NAME&quot;. iTunes Connect access is required for App Store distribution.

and/or

&gt; No accounts with App Store Connect access have been found for the team &quot;TEAM_NAME&quot;. App Store Connect access is required for App Store Connect distribution.

and/or

 &gt; Unable to authenticate with App Store Connect

[![Xcode error screenshot][1]][1]

How can I fix this issue and validate my app?

  [1]: https://i.stack.imgur.com/CXWRu.png

No accounts with iTunes Connect access have been found for the team

I have defined an `enum` as follows:

    enum Type: String, Codable {
        case text = &quot;text&quot;
        case image = &quot;image&quot;
        case document = &quot;document&quot;
        case profile = &quot;profile&quot;
        case sign = &quot;sign&quot;
        case inputDate = &quot;input_date&quot;
        case inputText = &quot;input_text&quot;
        case inputNumber = &quot;input_number&quot;
        case inputOption = &quot;input_option&quot;
    
        case unknown
    }



that maps a JSON string property.
The automatic serialization and deserialization works fine, but I found that if a different string is encountered, the deserialization fails. 

Is it possible to define an `unknown` case that maps any other available case?

This can be very useful, since this data comes from a RESTFul API that, maybe, can change in the future.

Codable enum with default case in Swift 4

I recently update my Xcode to version 9.3, so is instruments. After that, time profiler won&#39;t work anymore, it usually works fine before.

I tried to run it via Xcode, and I tried to run it manually. Doesn&#39;t work.
The life cycle row stuck in initializing, and I got a bunch of warnings complain about **the data volume is too high for a recording mode of &quot;immediate&quot; and some data had to be dropped to move forward**. 

Then I switch to delay mode, still got nothing. Then I create a simple new project, which should have &quot;little data volume&quot;, still got nothing.

I checked help, I googled, seems like no one has encountered this before. Does anyone have any clue about this?

![enter image description here][1]

  [1]: https://i.stack.imgur.com/gyGGq.png

Time profiler in instruments is not working

After upgrading to macOS 10.13.4 and Xcode 9.3, my project now makes all my Provisioning Profile ineligible! They worked before upgrade.

The error message for the distribution profile is:

Provisioning profile &quot;distribution profile name&quot; doesn&#39;t include signing certificate &quot;development certificate name&quot;

So I search through the forum, 

 - remove ALL items in keychain My Certificate
 - redownload the distribution profile
   (double tap to install to Xcode)
 - create new distribution profile (double tap to install to Xcode)
 - recreate the Production certificate (double tap to install to Keychain)
 - redownload the Development certificate (double tap to install to Keychain)

So now my keychain has two production certificate (one is newly created), and one development certificate, and the error is still there. I found it weird that it asked for the development certificate in distribution profile? (I think this is a clue but I don&#39;t know why and what to do.)

So now what should I do? Please help!

Provisioning profile doesn&#39;t include signing certificate (Xcode 9.3)

# My goal
I am trying to install Python 2.7.5 and 3.6.5 side-by-side on my MBP with with pyenv. 

# `pyenv` Installation
Following https://stackoverflow.com/questions/18671253/how-can-i-use-homebrew-to-install-both-python-2-and-3-on-mac , I tried:


    $ pyenv install 3.6.5

Which erred with:

    python-build: use openssl from homebrew
    python-build: use readline from homebrew
    Downloading Python-3.6.5.tar.xz...
    -&gt; https://www.python.org/ftp/python/3.6.5/Python-3.6.5.tar.xz
    Installing Python-3.6.5...
    python-build: use readline from homebrew
    
    BUILD FAILED (OS X 10.13.4 using python-build 20160602)
    
    Inspect or clean up the working tree at /var/folders/d0/t8d3jjp161g2dyrd4k67ypc80000gn/T/python-build.20180426091253.34709
    Results logged to /var/folders/d0/t8d3jjp161g2dyrd4k67ypc80000gn/T/python-build.20180426091253.34709.log
    
    Last 10 log lines:
      File &quot;/private/var/folders/d0/t8d3jjp161g2dyrd4k67ypc80000gn/T/python-build.20180426091253.34709/Python-3.6.5/Lib/ensurepip/__main__.py&quot;, line 5, in &lt;module&gt;
        sys.exit(ensurepip._main())
      File &quot;/private/var/folders/d0/t8d3jjp161g2dyrd4k67ypc80000gn/T/python-build.20180426091253.34709/Python-3.6.5/Lib/ensurepip/__init__.py&quot;, line 204, in _main
        default_pip=args.default_pip,
      File &quot;/private/var/folders/d0/t8d3jjp161g2dyrd4k67ypc80000gn/T/python-build.20180426091253.34709/Python-3.6.5/Lib/ensurepip/__init__.py&quot;, line 117, in _bootstrap
        return _run_pip(args + [p[0] for p in _PROJECTS], additional_paths)
      File &quot;/private/var/folders/d0/t8d3jjp161g2dyrd4k67ypc80000gn/T/python-build.20180426091253.34709/Python-3.6.5/Lib/ensurepip/__init__.py&quot;, line 27, in _run_pip
        import pip
    zipimport.ZipImportError: can&#39;t decompress data; zlib not available
    make: *** [install] Error 1

# What have I tried
* Installing zlib: `brew install zlib`

# My question
How can I install multiple Python environment with `pyenv` on MBP?

pyenv zlib error on MacOS:

I have a development pod that I connect to the my app locally using `:path =&gt; &#39;~/Projects/Swift/pod&#39;`. When I make changes inside the application code in that  development pod, this changes are not included after build. It&#39;s like I&#39;m build cached code, not my code changes. 

For include code changes into build I have to run the command &quot;Clean Build Folder&quot;, but after that build takes a very long time, for 10 minutes, which is not very productive. 

Literally, I comment on a line of code and wait 10 minutes to see the changes.

What is the problem?

I was trying to run &quot;pod install/pod update&quot; after any changes, but it has no effect.

How to rebuild development pod changes?

Apple announced a new Dark Mode for Xcode 10. I&#39;ve downloaded the beta but now I can&#39;t find any option to turn it on. I&#39;m currently on macOS 10.13 High Sierra.

[![enter image description here][1]][1]


  [1]: https://i.stack.imgur.com/jtJOQ.png

How to enable Dark Mode for Xcode

Comparing histories on the same branch is very confusing for me on GitHub. I struggle with this regularly:

If I use `compare/master` in the URL after the GitHub repo name, I can compare against other branches in the repo based on the options in the drop-down menus.

https://help.github.com/en/articles/comparing-commits-across-time

However, I usually want to compare several commits on master. 

How is this easily done? Could I get a more clear example? 


How to compare two different commits on the same branch in github?

In this commit message, it says that 2 files have been changed. 

    $ git commit -m &quot;fixed .gitignore&quot;
    [master c30afbe] fixed .gitignore
     Committer: Sahand Zarrinkoub &lt;sahandzarrinkoub@n133-p41.eduroam.kth.se&gt;
    Your name and email address were configured automatically based
    on your username and hostname. Please check that they are accurate.
    You can suppress this message by setting them explicitly. Run the
    following command and follow the instructions in your editor to edit
    your configuration file:
    
        git config --global --edit
    
    After doing this, you may fix the identity used for this commit with:
    
        git commit --amend --reset-author
    
     2 files changed, 5 insertions(+), 4 deletions(-)

This is a little surprising for me. I thought I&#39;d only staged one file to be changed. Now, I&#39;d like to see which files have been changed and how. What is the way to do this?

How to see which files were changed in last commit

prettier is not running on precommit. This worked with the same configuration in other projects, so I&#39;m baffled why it&#39;s not working this time. 

This is the relevant section of my package.json file:

    &quot;scripts&quot;: {
        &quot;precommit&quot;: &quot;lint-staged&quot;
      },
    &quot;lint-staged&quot;: {
      &quot;*.{js,json,css,scss,html,md}&quot;: [
        &quot;prettier --write&quot;,
        &quot;git add&quot;
      ]
    },

Edit. Here are the relevant devDependencies:

    &quot;devDependencies&quot;: {
      &quot;husky&quot;: &quot;^0.14.3&quot;,
      &quot;lint-staged&quot;: &quot;^7.0.4&quot;,
      &quot;prettier&quot;: &quot;1.12.0&quot;
    },

lint-staged not running on precommit

On GitLab, how to compare a file of two different commits? I know that that on command line git, the command is:

    git diff commit1 commit12 -- file_name

What is the link format to do this on GitLab? 

See my related [question][1]


  [1]: https://stackoverflow.com/questions/48525235/on-gitlab-how-to-view-a-file-as-of-commit-ref

On GitLab, how to compare a file of two different commits

**The objective is to commit a git branch. The output of &quot;git status&quot; for the branch is:**

    On branch zeromq_new
    Your branch is up to date with &#39;origin/zeromq&#39;.

    Changes not staged for commit:
      (use &quot;git add &lt;file&gt;...&quot; to update what will be committed)
      (use &quot;git checkout -- &lt;file&gt;...&quot; to discard changes in working directory)
      (commit or discard the untracked or modified content in submodules)

          modified:   log4cplus (modified content, untracked content)
          modified:   ../lib/notification/cppzmq (modified content)

The directory structure looks like this:

    HySecureGateway
    ├──fes
    │&#160;  └──log4cplus
    │&#160;      ├──.git
    │&#160;      ├──.gitattributes
    │&#160;      ├──.gitignore
    │&#160;      ├──.gitmodules
    │&#160;      ├──catch
    │&#160;      │   ├──.git
    │&#160;      │   ├──.gitattributes
    │&#160;      │   ├──.github
    │&#160;      │   ├──.gitignore
    │&#160;      │   └──.github
    │&#160;      │       ├──issue_template.md
    │&#160;      │       └──pull_request_template.md
    │&#160;      └──threadpool
    │&#160;          └──.github
    └──lib
        └──notification
            └──cppzmq
                ├──.git
                └──.gitignore

I read an answer of to a similar question here: 

https://stackoverflow.com/questions/4161022/how-to-track-untracked-content?utm_medium=organic&amp;utm_source=google_rich_qa&amp;utm_campaign=google_rich_qa , 

and couldn&#39;t understand it completely. 
Also the logc4plus/.gitmodules contains this:

    [submodule &quot;threadpool&quot;]
    
            path = threadpool
            url = https://github.com/log4cplus/ThreadPool.git
    
    [submodule &quot;catch&quot;]
    
            path = catch
            url = https://github.com/philsquared/Catch.git


Content Type	Original Author	Original Content on Stackoverflow
Question	Jaime S	View Question on Stackoverflow
Solution 1 - Ios	BlueSolrac	View Answer on Stackoverflow

New file created in Xcode 9.3, <wsname>.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist should it be committed?

Ios Problem Overview

Ios Solutions

Solution 1 - Ios

Is it possible to "hack" Python's print function?

Why are types always a certain size no matter its value?

Attributions