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What's the difference between Perl's backticks, system, and exec?
...ere you want to fetch STDOUT, STDERR or the return code, you can use well known standard modules like IPC::Open2 and IPC::Open3.
Example:
use IPC::Open2;
my $pid = open2(\*CHLD_OUT, \*CHLD_IN, 'some', 'cmd', 'and', 'args');
waitpid( $pid, 0 );
my $child_exit_status = $? >> 8;
Finally, IPC:...
OSX - How to auto Close Terminal window after the “exit” command executed.
When I'm done with Terminal, I want to exit it. Right now, I have three options:
14 Answers
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Automatically create an Enum based on values in a database lookup table?
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For those who don't know how to run the resulting executable on post-build: 1) Right click the project 2) Click on properties 3) Click on Build Events 4) On the "Post-build event command lines" text box type $(TargetPath)
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How do I wrap a selection with an HTML tag in Visual Studio?
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I know this is old and you have probably found the answer by now but I would just like to add for the sake of those who might not know it that this is possible in VS 2010:
Select the code you would like to surround.
Do ctrl-k ...
How to get current foreground activity context in android?
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Knowing that ActivityManager manages Activity, so we can gain information from ActivityManager. We get the current foreground running Activity by
ActivityManager am = (ActivityManager)context.getSystemService(Context.ACTIVITY...
What do linkers do?
I've always wondered. I know that compilers convert the code you write into binaries but what do linkers do? They've always been a mystery to me.
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Window appears off screen on ubuntu [closed]
...2.04 LTS
I have changed the positioning of the monitors several times, and now for some reason some of the windows open up off-screen (outside of both screens), Update Manager, for instance.
How can I position the windows on one of my screens?
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How to make clang compile to llvm IR
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@EliBendersky Do you know how to compile multiple .c and .h files into one human readable IR so that I can run the IR using 'lli theIrFile'? Thanks
– cache
Jul 20 '14 at 18:43
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How to use PrimeFaces p:fileUpload? Listener method is never invoked or UploadedFile is null / throw
...s = uploadedFile.getContents(); // Or getInputStream()
// ... Save it, now!
}
Or if you want non-ajax file upload:
<h:form enctype="multipart/form-data">
<p:fileUpload mode="simple" value="#{bean.uploadedFile}" />
<p:commandButton value="Upload" action="#{bean.upload}" ...
Is List a subclass of List? Why are Java generics not implicitly polymorphic?
...th a List<Animal> - you can add any animal to it... including a cat. Now, can you logically add a cat to a litter of puppies? Absolutely not.
// Illegal code - because otherwise life would be Bad
List<Dog> dogs = new ArrayList<Dog>(); // ArrayList implements List
List<Animal>...