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How do I delete an exported environment variable?
... @RodrigoGurgel using echo won't show existing variable set to empty string or nul. to your point, though, a proper way to test for variable would be env | grep -e '^VARNAME='.
– Thomas
Feb 1 '19 at 14:22
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Are the PUT, DELETE, HEAD, etc methods available in most web browsers?
...
@Mirich the form only supports POST. So we send POST with extra data, which the server knows means: ah, I should treat this like a PUT.
– Ciro Santilli 郝海东冠状病六四事件法轮功
Aug 24 '18 at 7:17
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Is there a better way to do optional function parameters in JavaScript? [duplicate]
...
+1, but typeof returns a string, so you need to put quotes around undefined for this to work: if(typeof myVariable == "undefined")...
– Richard Inglis
Jun 4 '12 at 15:10
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Fling gesture detection on grid layout
...lass ActivitySwipeDetector implements View.OnTouchListener {
static final String logTag = "ActivitySwipeDetector";
private Activity activity;
static final int MIN_DISTANCE = 100;
private float downX, downY, upX, upY;
public ActivitySwipeDetector(Activity activity){
this.activity = activity;
}
...
Cannot delete directory with Directory.Delete(path, true)
...Just slap this code into your project.
public static void DeleteDirectory(string target_dir)
{
string[] files = Directory.GetFiles(target_dir);
string[] dirs = Directory.GetDirectories(target_dir);
foreach (string file in files)
{
File.SetAttributes(file, FileAttributes.Nor...
How can I get a list of all functions stored in the database of a particular schema in PostgreSQL?
...query that's used internally connect to a database with psql and supply an extra "-E" (or "--echo-hidden") option and then execute the above command.
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How to check if bootstrap modal is open, so i can use jquery validate
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won't work if the modal hasn't been shown before. You will need to add an extra condition:
$("element").data('bs.modal')
so the answer taking into account first appearance:
if ($("element").data('bs.modal') && $("element").data('bs.modal').isShown){
...
}
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What is the difference between dict.items() and dict.iteritems() in Python2?
...eal list of tuples and returned that. That could potentially take a lot of extra memory.
Then, generators were introduced to the language in general, and that method was reimplemented as an iterator-generator method named iteritems(). The original remains for backwards compatibility.
One of Pyth...
How to Use slideDown (or show) function on a table row?
...ed = sR.defaults.slideSpeed;
}
if(typeof arg2 == 'string'){
sR.thisCallArgs.easing = arg2;
}else if(typeof arg2 == 'function'){
sR.thisCallArgs.callback = arg2;
}else if(typeof arg2 == 'undefined') {
sR....
CoffeeScript on Windows?
...ll
CoffeeScript.compile(code);
... to get back the compiled JavaScript string.
UPDATE 2012-04-12: Cygwin is no longer needed to run Node on Windows. Microsoft
worked with Joyent through 2H 2011 to improve node's support for
Windows IOCP async IO. Node 0.6 was the first release of node to...