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Database development mistakes made by application developers [closed]
...ese cases and creates more overhead in your queries as you must include an extra join. I would say that it is safer to say that you probably ought to use a surrogate for user-specific data (thus, not countries, currencies and US States).
– Thomas
Aug 2 '10 at 1...
Refresh image with a new one at the same url
...to forceImgReload() along with (or instead of) a src argument: just add an extra or replacement parameter for this information to
// this function, to imgReloadRestore(), to forceImgReload(), and to the anonymous function returned by forceImgReload() (and make it overwrite the earlier parameter vari...
How do I return the response from an asynchronous call?
...orter than all other functions Listed.
The callback is set directly (so no extra unnecessary closures).
It uses the new onload (so you don't have to check for readystate && status)
There are some other situations which I don't remember that make the XMLHttpRequest 1 annoying.
There are two...
When to use volatile with multi threading?
...
...matter if the other threads do an extra few iterations of their work loops before they terminate, as long as it happens reasonably soon after the flag is set. Of course, this is the ONLY use that I can think of and its rather niche (and may not work on platfo...
How to run a program without an operating system?
...M calls theirs semihosting for example. On real hardware, it requires some extra hardware and software support, but on emulators it can be a free convenient option. Example.
Here we will do a BIOS example as it is simpler on x86. But note that it is not the most robust method.
main.S
.code16
m...
Table with fixed header and fixed column on pure css
.../javascript" charset="utf-8" src="http://datatables.net/release-datatables/extras/FixedColumns/media/js/FixedColumns.js"></script>
i don't see any other way of achieving this. Especially not by using css only.
This is a lot to go through. Hope this helps :)
...
How does PHP 'foreach' actually work?
...hat, in all cases but 3, the array is modified during the loop, while this extra reference is alive. This triggers a clone, and that explains what's going on here!
Here is an excellent article for another side effect of this copy-on-write behaviour: The PHP Ternary Operator: Fast or not?
...
Efficient Algorithm for Bit Reversal (from MSB->LSB to LSB->MSB) in C
...eversed bits of v; first get LSB of v
int s = sizeof(v) * CHAR_BIT - 1; // extra shift needed at end
for (v >>= 1; v; v >>= 1)
{
r <<= 1;
r |= v & 1;
s--;
}
r <<= s; // shift when v's highest bits are zero
Faster (32-bit processor)
unsigned char b = x;
b = ((...
What exactly does git's “rebase --preserve-merges” do (and why?)
...e has to define what it means to replay a merge commit, and deal with some extra wrinkles
The most interesting part, conceptually, is perhaps in picking what the new commit's merge parents should be.
Replaying merge commits also require explicitly checking out particular commits (git checkout <...
What is the purpose of Flask's context stacks?
...fference in philosophy. Not a TDD practitioner either, which a lot of this extra machinery seems to be intended to support.
– QuadrupleA
Aug 15 '16 at 22:07
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