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Which are more performant, CTE or temporary tables?
...ery row of the consumer query, as a correlated subquery... you must always watch out for that if it is not desired.
– Mike M
Jul 11 '14 at 12:36
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Difference between a Postback and a Callback
...self in an HTML web page with a single textbox and button and press it and watch it post to the server, exactly like an ASP.NET page would do but faster and simpler. That's what real POSTBACK is. The browser naturally sends the server the necessary POST HTTP Header to do so, but caches the HTML in t...
Is it possible to set the equivalent of a src attribute of an img tag in CSS?
...ype="image" id="img1" value=" ">
INPUT type=image Live Demo
Also watch out for the upcoming <picture> element in HTML5.1, currently a working draft.
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What is the “assert” function?
...ssert macro running.
// BAD
assert(x++);
// GOOD
assert(x);
x++;
// Watch out! Depends on the function:
assert(foo());
// Here's a safer way:
int ret = foo();
assert(ret);
From the combination of the program calling abort() and not being guaranteed to do anything, asserts should only be us...
What is uintptr_t data type
...ot sure if relevant... Have you tried "opaque typedefs"? Vide: youtube.com/watch?v=jLdSjh8oqmE
– shycha
Apr 1 at 0:24
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What can I do with a moved-from object?
...ack
This answer now appears in video format here: http://www.youtube.com/watch?v=vLinb2fgkHk&t=47m10s
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What is the use of “assert” in Python?
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Watch out for the parentheses. As has been pointed out above, in Python 3, assert is still a statement, so by analogy with print(..), one may extrapolate the same to assert(..) or raise(..) but you shouldn't.
This is importa...
Setting up two different static directories in node.js Express framework
...and alternate_static will be served as if they were in the same directory. Watch out for filename clobbers, though.
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How should I call 3 functions in order to execute them one after the other?
...xample to give it some context. I found this video on YouTube: youtube.com/watch?v=y5mltEaQxa0 - and wrote up the source from the video here drive.google.com/file/d/1NrsAYs1oaxXw0kv9hz7a6LjtOEb6x7z-/… There are some more nuances like the catch missing in this example that this elaborates on. (use ...
break out of if and foreach
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Watch out for the break construct. If you forget the ; after it, it might get the result of next expression and start behaving unexpectedly (IE jumping out of much more than you would have wanted). I know everyone suggests ag...