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How to list variables declared in script in bash?
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compgen -v
It lists all variables including local ones.
I learned it from Get list of variables whose name matches a certain pattern, and used it in my script.
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How do I get the coordinates of a mouse click on a canvas element?
...6667/578749 that instead of event.pageX/Y, it subtracted calculated offset from event.clientX/Y. Could someone review this and explain?
– lvella
Jul 4 '13 at 19:41
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How to add a vertical Separator?
...e so that all controls in one line are actually on one line. just a helper from vs2012. when i rotate the separator, i don't get these lines anymore.
– Martin Weber
Nov 27 '12 at 16:37
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What is difference between Collection.stream().forEach() and Collection.forEach()?
... Iterable.forEach takes the collection's lock. Where is this information from? I'm unable to find such behavior in JDK sources.
– turbanoff
Aug 25 '15 at 12:40
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Java default constructor
...h one of the following is a default constructor and what differentiates it from any other constructor?
13 Answers
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if else statement in AngularJS templates
I want to do a condition in an AngularJS template. I fetch a video list from the Youtube API. Some of the videos are in 16:9 ratio and some are in 4:3 ratio.
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get and set in TypeScript
...tion for the TypeScriptCompile build tool. You can see that here:
As @DanFromGermany suggests below, if your are simply reading and writing a local property like foo.bar = true, then having a setter and getter pair is overkill. You can always add them later if you need to do something, like loggi...
Is False == 0 and True == 1 an implementation detail or is it guaranteed by the language?
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False is a bool. It has a different type. It is a different object from 0 which is an integer.
0 == False returns True because False is cast to an integer. int(False) returns 0
The python documentation of the == operator says (help('==')):
The operators <, >, ==, >=, <=, an...
What is the difference between char * const and const char *?
... @supercat (oh, C-only, sorry for the C++ code link, I got here from a C++ question) It's all about the C declaration syntax, with a ("pure") type part followed by a declarator. In "int const *foo, *volatile bar" the type part is int const (stops before the *) and the declarators are *foo...
What exactly does an #if 0 … #endif block do?
...tax error! Why? Because block comments do not nest, and so (as you can see from SO's syntax highlighting) the */ after the word "NULL" terminates the comment, making the baz call not commented out, and the */ after baz a syntax error. On the other hand:
#if 0
foo();
bar(x, y); /* x must not be NULL...