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What is the proper way to check if a string is empty in Perl?
... situation where you haven't already guarded against undef, then the catch-all for "non-empty" that won't warn is if (defined $str and length $str).
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Declaring and initializing variables within Java switches
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Switch statements are odd in terms of scoping, basically. From section 6.3 of the JLS:
The scope of a local variable declaration in a block (§14.4) is the rest of the block in which the declaration appears, starting with its own initializer and including any further decla...
passport.js RESTful auth
... app haven't been populated with data due to the user not being logged in. All these sections have an event listener on a "login" event. All this is client side stuff, the server does not know of these events.
User enters his/her login and password and hits the submit button, which triggers a Javasc...
C++ include and import difference
...andard C/C++ preprocessor statement, used for including header (or occasionally other source code) files in your source code file.
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Why does Environment.Exit() not terminate the program any more?
... solved. And the program shuts down cleanly and reliably. The update installed patches for Windows Defender, wdboot.sys, wdfilter.sys, tcpip.sys, rpcrt4.dll, uxtheme.dll, crypt32.dll and wintrust.dll
Uxtheme.dll is the odd-duck out. It implements the Visual Styles theming API and is used by this...
How to make clang compile to llvm IR
...e correct where file extensions are concerned - and the clang frontend actually does the right thing if .bc is used; also, keep in mind that llvm-ld can act as frontend for the system toolchain, ie my previous answer using llvm-ld -native should work as expected....
– Christoph...
How to git reset --hard a subdirectory?
Imagine the following use case: I want to get rid of all changes in a specific subdirectory of my Git working tree, leaving all other subdirectories intact.
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Add a UIView above all, even the navigation bar
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[self.navigationController.view addSubview:overlayView]; is what you really want
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How to use CSS to surround a number with a circle?
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The current latest version of Internet Explorer, 9, actually supports border-radius. ...and div isn't a great choice for this. :)
– reisio
Apr 25 '12 at 3:15
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How to do a newline in output
How do I make \n actually work in my output? At the moment it just writes it all in 1 long block. Thanks for any help
4 A...