Run a visual studio command prompt to ensure your path can find dumpbin.exe

Pipe to findstr to save on the big spew about each section and optionally you can use a wildcard to analyse a folder of libs. 

`dumpbin /headers *.lib | findstr machine`

Example of what you&#39;re looking for;

    8664 machine (x64)

You can use `dumpbin` utility with `/headers` option

It returns whether the library was built for 32 or 64 bit architecture.

Check [DUMPBIN Reference][1] for details.

Example usage: 

    c:\&gt;dumpbin libXYZ.lib /headers

 


  [1]: https://docs.microsoft.com/en-us/cpp/build/reference/dumpbin-reference

I haven&#39;t tried this but you can also use `file.exe`, the unix `file` equivalent on windows.
You can download the binary (and source as well) from [here][1] or gnu version [here][2]


  [1]: http://www.vowles-home.demon.co.uk/utils/windows_file_exe.htm
  [2]: http://gnuwin32.sourceforge.net/

In visual studio, we can get to know about whether Lib/dll is 32 or 64 bit with Coreflags.exe
This tool is automatically installed with Visual Studio.
we can run this command from Command line, which can be run as 


     C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\Bin\CorFlags.exe whatever_Lib_with_path

This command will return you whether that file is managed or Unmanaged.
If its **managed** then it can give info about that is is 32/64 bit.




I have a PowerShell script to add a website to a Trusted Sites in Internet Explorer:


    set-location &quot;HKCU:\Software\Microsoft\Windows\CurrentVersion\Internet Settings&quot;
    set-location ZoneMap\Domains
    new-item TESTSERVERNAME
    set-location TESTSERVERNAME
    new-itemproperty . -Name http -Value 2 -Type DWORD


I want to execute these PowerShell commands from a batch file. It seems simple when I have to run a single command, **BUT** in this case I have a sequence of related commands. I want to avoid creating a separate file for the PS script to be called from the batch - everything must be in the batch file.

The question is: How to execute PowerShell commands (or statements) from a batch file?

How to execute PowerShell commands from a batch file?

My phonegap/jquery mobile application flickers most of the time when I navigate between the pages. Is this normal or is there a solution for this?



Flickering when navigating between pages

Is there any tool that can directly test if a library is made for 32 or 64 bit?

Have a static lib, is there a simple way to know it is for 32 bit or 64 bit?

<p>Is there any tool that can directly test if a library is made for 32 or 64 bit?</p>


I have a variable in my function that is static, but I would like it to be static on a per thread basis.

How can I allocate the memory for my C++ class such that each thread has its own copy of the class instance?

    AnotherClass::threadSpecificAction()
    {
      // How to allocate this with thread local storage?
      static MyClass *instance = new MyClass();

      instance-&gt;doSomething();
    }

This is on Linux.  I&#39;m not using C++0x and this is gcc v3.4.6.

How to allocate thread local storage?

If I don&#39;t assign a value to a variable when I declare it, does it default to zero or just whatever was previously in the memory?

e.g.

    float x;

Default variable value

&gt; **Possible Duplicate:** &lt;br/&gt;
&gt; [Undefined Symbol ___gxx_personality_v0 on link](https://stackoverflow.com/questions/203548/undefined-symbol-gxx-personality-v0-on-link)

&lt;!-- End of automatically inserted text --&gt;

I have a problem with the following program.

    // fkt.cpp

    #include &quot;fkt.h&quot;

    int add2(int a, int b)
    {
        return a+b;
    }

And the header:

    // fkt.h

    int add2(int a, int b);

Now I compile this with: 

    g++ -c fkt.cpp

Now I run `nm` and get:

    00000000 T _Z6add2ii
             U __gxx_personality_v0

When I want to use the function anywhere I get:

    (.eh_frame+0x12): undefined reference to `__gxx_personality_v0&#39;

How can I solve this problem? (I&#39;m using [Ubuntu][1] Linux.)

  [1]: http://en.wikipedia.org/wiki/Ubuntu_%28operating_system%29


Link error &quot;undefined reference to `__gxx_personality_v0&#39;&quot; and g++

I was wondering, will `new T` still throw `bad_alloc` if I compile my program using the `-fno-exceptions` option to disable exception handling?

Or will the compiler (GCC and clang support that option) implicitly transform the use of `new T` to `new (nothrow) T`?

With &quot;-fno-exceptions&quot;, what happens with &quot;new T&quot;?

The question is in bold at the bottom, the problem is also summarized by the distillation code fragment towards the end.

I am trying to unify my type system (the type system does to and from from type to string) into a single component(as defined by Lakos). I am using `boost::array`, `boost::variant`, and `boost::mpl`, in order to achieve this. I want to have the parser and generator rules for my types unified in a variant. there is a undefined type, a int4(see below) type and a int8 type. The variant reads as `variant&lt;undefined, int4,int8&gt;`.

int4 traits: 
```cpp
    struct rbl_int4_parser_rule_definition
    {
      typedef boost::spirit::qi::rule&lt;std::string::iterator, rbl_int4()&gt; rule_type;
      
      boost::spirit::qi::int_parser&lt;rbl_int4&gt; parser_int32_t;
      
      rule_type rule;
      
      rbl_int4_parser_rule_definition()
      {
        rule.name(&quot;rbl int4 rule&quot;);
        rule = parser_int32_t;  
      }
    };
    
    template&lt;&gt;
    struct rbl_type_parser_rule&lt;rbl_int4&gt;
    {
      typedef rbl_int4_parser_rule_definition string_parser;
    };
```
the variant above starts out as undefined, and then I initialize the rules. I had a problem, which caused 50 pages of errors, and I have finally managed to track it down, Variant uses `operator=` during assignment and a `boost::spirit::qi::int_parser&lt;&gt;` cannot be assigned to another (operator=).

To contrast, I don&#39;t have a problem with my undefined type:
```cpp
    struct rbl_undefined_parser_rule_definition
    {
      typedef boost::spirit::qi::rule&lt;std::string::iterator, void()&gt; rule_type;
      rule_type rule;
      
      rbl_undefined_parser_rule_definition()
      {
        rule.name(&quot;undefined parse rule&quot;);
        rule = boost::spirit::qi::eps;
      }
    };
    
    template&lt;&gt;
    struct rbl_type_parser_rule&lt;rbl_undefined&gt;
    {
      typedef rbl_undefined_parser_rule_definition string_parser;
    };
```
Distillation of the problem:
```cpp
    #include &lt;string&gt;
    #include &lt;boost/spirit/include/qi.hpp&gt;
    #include &lt;boost/variant.hpp&gt;
    #include &lt;boost/cstdint.hpp&gt;
    
    typedef boost::spirit::qi::rule&lt;std::string::iterator,void()&gt; r1;
    typedef boost::spirit::qi::rule&lt;std::string::iterator,int()&gt; r2;
    
    typedef boost::variant&lt;r1,r2&gt; v;
    
    int main()
    {
      /*
      problematic
      boost::spirit::qi::int_parser&lt;int32_t&gt; t2;
      boost::spirit::qi::int_parser&lt;int32_t&gt; t1;
      
      
      t1 = t2;
      */
    
      //unproblematic
      r1 r1_;
      r2 r2_;
      r1_ = r2_;
    
      v v_;
      // THIS is what I need to do.
      v_ = r2();
    }
```
There is a semantic gap between concrete parsers and rules. My brain is smoking at the moment so I am not going to think about pramatism, **My question is, how do I solve this problem ?**  I can think of three approaches to solve the problem.

**one:** Static function members:
```cpp
    struct rbl_int4_parser_rule_definition
    {
      typedef boost::spirit::qi::rule&lt;std::string::iterator, rbl_int4()&gt; rule_type;
      
      //boost::spirit::qi::int_parser&lt;rbl_int4&gt; parser_int32_t;
      
      rule_type rule;
      
      rbl_int4_parser_rule_definition()
      {
        static boost::spirit::qi::int_parser&lt;rbl_int4&gt; parser_int32_t;
    
        rule.name(&quot;rbl int4 rule&quot;);
        rule = parser_int32_t;  
      }
    };
```
I guess approach one prevents thread safe code  ? ? 

**two:** The integral parser is wrapped in a shared_ptr. There are two reasons I&#39;m bothering with TMP for the typing system: 1 efficiency, 2 centralizing concerns into components. using pointers defeats the first reason.

**three:** operator= is defined as a no-op. variant guarantees that the `lhs` is default constructed before assignment.

**Edit:**
I am thinking option 3 makes the most sense (operator= is a no-op). Once the rule container is created it will not change, and I am only assigning to force a type&#39;s rule trait into its offset.

more spirit madness - parser-types (rules vs int_parser&lt;&gt;) and meta-programming techniques

Is it possible to use a .netrc file on Windows when I&#39;m using Git to clone a remote repository with HTTP and user - password?


Git - How to use .netrc file on Windows to save user and password

I have a windowless wpf application, whenever I set the window state as maximized it maximizes it on the primary display.

What I would like to do is have it maximize on which ever display the application is running.

So any idea how I would do this?

My code at the moment is just

    private void titleBarThumb_MouseDoubleClick(object sender, MouseButtonEventArgs e)
            {
                if (this.WindowState == System.Windows.WindowState.Normal)
                {
                    this.WindowState = System.Windows.WindowState.Maximized;
                }
                else
                {
                    this.WindowState = System.Windows.WindowState.Normal;
                }
            }

Maximize WPF Window on the current screen

AFAIK maven does not have an installer for Windows, you simply unzip it wherever you like, as explained [here][1].

However in many places there are references to a &lt;code&gt;.m2&lt;/code&gt; folder under the user folder (in Win7 I would guess it to be by default at &lt;code&gt;C:\Users\&lt;username&gt;\.m2&lt;/code&gt;. Alas I do not have that folder. Is there some command to create this folder? Am I missing something basic?


  [1]: http://maven.apache.org/download.html

Missing maven .m2 folder

Are there any good lightweight CSV viewers out there? I would like something that easily refreshes a file after it has been modified. A quick google search didn&#39;t turn up any clear winners.

I&#39;d prefer not to have to open Excel each time since it locks the file. This prevents any other programs from updating the file.

What is a good light-weight CSV viewer?

I have a scenario where I need to run *a* linux shell command frequently (with different filenames) from windows. I am using PuTTY and WinSCP to do that (requires login name and password).  The file is copied to a predefined folder in the linux machine through WinSCP and then the command is run from PuTTY. Is there a way by which I can automate this through a program. Ideally I would like to right click the file from windows and issue the command which would copy the file to remote machine and run the predefined command (in PuTTy) with the filename as argument.

Automating running command on Linux from Windows using PuTTY

How can I get VS 2010 to run more than one C++ compile process at a time? I mean building object modules in parallel; I&#39;m not interested in building more than one project at a time (I know about Tools &gt; Options &gt; Build and Run &lt; Maximum number of parallel project builds, but that doesn&#39;t do what I want).

Basically, I&#39;m looking for Visual Studio&#39;s equivalent of &quot;make -jN&quot;.

How can I do a parallel build in Visual Studio 2010?

I&#39;ve added several directories, libraries such as matlab, opencv, etc to compile my current C file in Visual Studio project.

All my upcoming projects will require the same setup/properties. Do I need to setup my each project&#39;s properties individually or I can do something to apply it to all ?

Visual Studio: can I copy a project&#39;s properties to use in another project?

While I am running the simple code as below I have two errors as following:

    #include &lt;iostream&gt;
    #include &lt;string&gt;
    using namespace::std;

    template &lt;class Type&gt;
    class Stack
    {
    public:
        Stack (int max):stack(new Type[max]), top(-1), maxsize(max){}
        ~Stack (void) {delete []stack;}
        void Push (Type &amp;val);
        void Pop (void) {if (top&gt;=0) --top;}
        Type&amp; Top (void) {return stack[top];}
        //friend ostream&amp; operator&lt;&lt; (ostream&amp;, Stack&amp;);
    private:
        Type *stack;
        int top;
        const int maxSize;
    };

    template &lt;class Type&gt;
    void Stack &lt;Type&gt;:: Push (Type &amp;val)
    {
        if (top+1&lt;maxsize)
            stack [++top]=val;
    }


Errors:
&gt;MSVCRTD.lib(crtexew.obj) : error LNK2019: unresolved external symbol `_WinMain@16` referenced in function `___tmainCRTStartup`  

What Should I do?

error LNK2019: unresolved external symbol _WinMain@16 referenced in function ___tmainCRTStartup

I want to replace an element into a specific position of a vector, can I just use an assignment:

    // vec1 and 2 have the same length &amp; filled in somehow
    vec1;
    vec2;

    vec1[i] = vec2[i] // insert vec2[i] at position i of vec1

or I have to use insert():

    vector&lt;sometype&gt;::iterator iterator = vec1.begin();

    vec1.insert(iterator+(i+1), vec2[i]);


Replace an element into a specific position of a vector

I wonder why one of my projects has `VDSERR.h` listed under &quot;External Dependencies&quot; and another hasn&#39;t and gives me an &quot;undefined symbol&quot; compiler error about a symbol which is defined in there. How can I include this file in the other project as well?

How do files get into the External Dependencies in Visual Studio C++?

I want to detect whether the current Windows OS is 32-bit or 64-bit. How to achieve it using C++? I don&#39;t want processor type I want OS&#39;s bit type. This is because you can install 32-bit OS on 64-bit processor.



Detect 32-bit or 64-bit of Windows

I have just installed CentOS 6 64bit version, I&#39;m trying to install a 32-bit application on a 64-bit machine and got this error:

&gt; /lib/ld-linux.so.2: bad ELF interpreter: No such file or directory

I&#39;m new to linux.  How do I resolve this?


CentOS 64 bit bad ELF interpreter

What is meant by 32bit or 64 bit machine?

It’s the processor architecture…a 32 bit machine can read and write 32bit data at a time same way with 64 bit machine….


whats the maximum memory that a 32 bit machine can access?

It is `2^32=4Gb` (4Gigabit = 0.5 GigaByte)

That means 4Gb ram?

If  I consider the same way for a 64 bit machine then I can have a ram of 16ExbiBytes ..is that possible?

Are my concepts right?

how much memory can be accessed by a 32 bit machine?

Here is the situation, I&#39;m using a C based dll in my dot.net application. There are 2 dlls, one is 32bit called MyDll32.dll and the other is a 64bit version called MyDll64.dll.

There is a static variable holding the DLL file name: string DLL_FILE_NAME.

and it is used in the following way:

    [DllImport(DLL_FILE_NAME, CallingConvention=CallingConvention.Cdecl, EntryPoint=Func1&quot;)]
    private static extern int is_Func1(int var1, int var2);

Simple so far.

As you can imagine, the software is compiled with &quot;Any CPU&quot; turned on.

I also have the following code to determine if the system should use the 64bit file or the 32bit file.

    #if WIN64
            public const string DLL_FILE_NAME = &quot;MyDll64.dll&quot;;
    #else
            public const string DLL_FILE_NAME = &quot;MyDll32.dll&quot;;        
    #endif

By now you should see the problem.. DLL_FILE_NAME is defined in compilation time and not in execution time so the right dll isn&#39;t loaded according to the execution context.

What would be the correct way to deal with this issue? I do not want two execution files (one for 32bit and the other for 64bit)? How can I set DLL_FILE_NAME *before* it is used in the DllImport statement?

Using a 32bit or 64bit dll in C# DllImport

A great programming resource, Bit Twiddling Hacks, proposes ([here][1]) the following method to compute log2 of a 32-bit integer:

    #define LT(n) n, n, n, n, n, n, n, n, n, n, n, n, n, n, n, n
    static const char LogTable256[256] = 
    {
        -1, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3,
        LT(4), LT(5), LT(5), LT(6), LT(6), LT(6), LT(6),
        LT(7), LT(7), LT(7), LT(7), LT(7), LT(7), LT(7), LT(7)
    };

    unsigned int v; // 32-bit word to find the log of
    unsigned r;     // r will be lg(v)
    register unsigned int t, tt; // temporaries
    if (tt = v &gt;&gt; 16)
    {
        r = (t = tt &gt;&gt; 8) ? 24 + LogTable256[t] : 16 + LogTable256[tt];
    }
    else 
    {
        r = (t = v &gt;&gt; 8) ? 8 + LogTable256[t] : LogTable256[v];
    }

and mentions that

&gt; The lookup table method takes only about 7 operations to find the log
&gt; of a 32-bit value. If extended for 64-bit quantities, it would take
&gt; roughly 9 operations.

but, alas, doesn&#39;t give any additional info about which way one should actually go to extend the algorithm to 64-bit integers.

Any hints about how a 64-bit algorithm of this kind would look like?


  [1]: http://graphics.stanford.edu/~seander/bithacks.html#IntegerLogLookup

Content Type	Original Author	Original Content on Stackoverflow
Question	user705414	View Question on Stackoverflow
Solution 1 - C++	Jet Set Willy	View Answer on Stackoverflow
Solution 2 - C++	Alok Save	View Answer on Stackoverflow
Solution 3 - C++	Vikram.exe	View Answer on Stackoverflow
Solution 4 - C++	Ayush joshi	View Answer on Stackoverflow

Have a static lib, is there a simple way to know it is for 32 bit or 64 bit?

C++ Problem Overview

C++ Solutions

Solution 1 - C++

Solution 2 - C++

Solution 3 - C++

Solution 4 - C++

Flickering when navigating between pages

How to execute PowerShell commands from a batch file?

Attributions