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What are the mechanics of short string optimization in libc++?
...tore a short string (i.e. largest capacity() without an allocation).
On a 32 bit machine, 10 chars will fit in the short string. sizeof(string) is 12.
On a 64 bit machine, 22 chars will fit in the short string. sizeof(string) is 24.
A major design goal was to minimize sizeof(string), while maki...
Converting strings to floats in a DataFrame
...
jpp
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answered May 24 '13 at 12:54
JeffJeff
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What platforms have something other than 8-bit char?
...turned up for example in OMAP2. There are other DSPs out there with 16 and 32 bit char. I think I even heard about a 24-bit DSP, but I can't remember what, so maybe I imagined it.
Another consideration is that POSIX mandates CHAR_BIT == 8. So if you're using POSIX you can assume it. If someone late...
Visual Studio: ContextSwitchDeadlock
...ontextSwitchDeadlock is specific to the debugger. A release version of the exe won't display this message.
– Pedro
Dec 3 '15 at 18:36
9
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What data type to use for hashed password field and what length?
...ex digits by half.
MD5 generates a 128-bit hash value. You can use CHAR(32) or BINARY(16)
SHA-1 generates a 160-bit hash value. You can use CHAR(40) or BINARY(20)
SHA-224 generates a 224-bit hash value. You can use CHAR(56) or BINARY(28)
SHA-256 generates a 256-bit hash value. You can use CHAR...
Efficient way to determine number of digits in an integer
...++;
}
return digits;
}
// partial specialization optimization for 32-bit numbers
template<>
int numDigits(int32_t x)
{
if (x == MIN_INT) return 10 + 1;
if (x < 0) return numDigits(-x) + 1;
if (x >= 10000) {
if (x >= 10000000) {
if (x >= 100...
“SetPropertiesRule” warning message when starting Tomcat from Eclipse [duplicate]
...
Stop the server (Make sure its stopped via Task Manager, I killed javaw.exe as many times Eclipse doesn't really shut down properly)
Right click the Server->'Add and Remove'. Remove the project. Finish.
Right click the Server->'Add and Remove'. Add the project. Finish.
Restart see if works,...
Java String to SHA1
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32
SHA-1 (and all other hashing algorithms) return binary data. That means that (in Java) they pro...
ng-model for `` (with directive DEMO)
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328
I created a workaround with directive:
.directive("fileread", [function () {
return {
...
Why Large Object Heap and why do we care?
...en the array has more than 1000 elements. That's another optimization for 32-bit code, the large object heap allocator has the special property that it allocates memory at addresses that are aligned to 8, unlike the regular generational allocator that only allocates aligned to 4. That alignment is...