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When does invoking a member function on a null instance result in undefined behavior?
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116
Both (a) and (b) result in undefined behavior. It's always undefined behavior to call a member...
eval command in Bash and its typical uses
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10 Answers
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Getting vertical gridlines to appear in line plot in matplotlib
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102
You may need to give boolean arg in your calls, e.g. use ax.yaxis.grid(True) instead of ax.yax...
What's the best way to make a d3.js visualisation layout responsive?
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12 Answers
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Finding what methods a Python object has
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19 Answers
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“:” (colon) in C struct - what does it mean? [duplicate]
What does :1 and :8 mean?
3 Answers
3
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Can TCP and UDP sockets use the same port?
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112
Yes, you can use the same port number for both TCP and UDP. Many protocols already do this, f...
Add and remove multiple classes in jQuery
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edited Oct 3 '19 at 20:30
simhumileco
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Capture key press (or keydown) event on DIV element
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(1) Set the tabindex attribute:
<div id="mydiv" tabindex="0" />
(2) Bind to keydown:
$('#mydiv').on('keydown', function(event) {
//console.log(event.keyCode);
switch(event.keyCode){
//....your actions...
Split string based on a regular expression
...or more whitespace characters, thus I'm using regular expressions to match 1 or more spaces and split it. However, a space is being inserted between every element:
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