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difference between #if defined(WIN32) and #ifdef(WIN32)
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#ifdef checks whether a macro by that name has been defined, #if evaluates the expression and checks for a true value
#define FOO 1
#define BAR 0
#ifdef FOO
#ifdef BAR
/* this will be compiled */
#endif
#endif
#if BAR
/* this won't */
#endif
#if FOO |...
How to go back to lines edited before the last one in Vim?
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Till now, I used to use this hack of undo followed by redo to go to last changed position. i.e. "u" and then "ctrl+r".
– Mayank Jaiswal
Dec 16 '15 at 5:25
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How to add a separator to a WinForms ContextMenu?
...mber the syntax. I ended up pulling up some old VC++ 6 files to find it. By the way, I still occasionally refer to "The Petzold Book" for some things. Wow, I'm feeling old...
– Brad Bruce
Aug 29 '09 at 1:27
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How can I convert a DOM element to a jQuery element?
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The reverse can be done by: johnjianfang.blogspot.com/2009/04/…
– Ryan Sampson
Apr 1 '10 at 21:19
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android image button
...tton; background is the shape of the original button, which is a rectangle by default. If you want to use only the image, you can omit it, or you can use other colors/shapes around the icon.
– ocramot
May 25 '17 at 15:47
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NameError: name 'reduce' is not defined in Python
...ut how most cases can be written in a more readable fashion. For me, it's by writing sum(item['key'] for item in list_of_dicts).
– connorbode
Mar 4 '17 at 22:15
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jQuery same click event for multiple elements
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I like this way better. But can you target one element by class and one by ID in the same declaration? For e.g. $(document).on("click touchend", ".class1, #id1, .class3", function () { //do stuff });
– Gaurav Ojha
Jan 4 '17 at 6:23
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Is not an enclosing class Java
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Making ZShape static totally defeats the purpose of what he's trying to do, which is instantiate a copy of ZShape.
– Cardano
Feb 15 '14 at 1:58
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Multiple commands on a single line in a Windows batch file
... tend to be evaluated on read rather than execute.
You can get round this by turning on delayed expansion:
pax> cmd /v:on /c "echo !time! & ping 127.0.0.1 >nul: & echo !time!"
15:23:36.77
15:23:39.85
That's needed from the command line. If you're doing this inside a script, you can...
How do I run Asynchronous callbacks in Playground
Many Cocoa and CocoaTouch methods have completion callbacks implemented as blocks in Objective-C and Closures in Swift. However, when trying these out in Playground, the completion is never called. For example:
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