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Is it better to use std::memcpy() or std::copy() in terms to performance?
...py will have a slight, almost imperceptible performance loss. I just did a test and found that to be untrue: I did notice a performance difference. However, the winner was std::copy.
I wrote a C++ SHA-2 implementation. In my test, I hash 5 strings using all four SHA-2 versions (224, 256, 384, 512),...
Bash if [ false ] ; returns true
...
You are running the [ (aka test) command with the argument "false", not running the command false. Since "false" is a non-empty string, the test command always succeeds. To actually run the command, drop the [ command.
if false; then
echo "True"
el...
Is < faster than
...comparisons will be typically implemented in two machine instructions:
A test or cmp instruction, which sets EFLAGS
And a Jcc (jump) instruction, depending on the comparison type (and code layout):
jne - Jump if not equal --> ZF = 0
jz - Jump if zero (equal) --> ZF = 1
jg - Jump if greater ...
Is there a way to create a function from a string with javascript?
...
I added a jsperf test for 4 different ways to create a function from string :
Using RegExp with Function class
var func = "function (a, b) { return a + b; }".parseFunction();
Using Function class with "return"
var func = new Function("re...
Facebook Post Link Image
...
i have added og tags in my code and when i tested it with og object debugger tool of facebook, it shows me correct information as I saved in og tags, but when I try to link up the page on my fb account, it shows the cached copy only. How much time fb keeps the cached ...
Initialize a nested struct
...ort string
}
func main() {
c := &Configuration{
Val: "test",
Proxy: Proxy{
Address: "addr",
Port: "port",
},
}
fmt.Println(c)
fmt.Println(c.Proxy.Address)
}
The less proper and ugly way but still works:
c := &Configur...
Check if a program exists from a Makefile
...erchuan requires making a target. However, if you have many executables to test and your Makefile has many independent targets, each of which requires the tests, then each target requires the test target as a dependency. That makes for a lot of extra typing as well as processing time when you make m...
Test if a vector contains a given element
How to check if a vector contains a given value?
7 Answers
7
...
How to create a file in memory for user to download, but not through server?
...
It does work in Chrome now (tested against v20 and v21) but not IE9 (that might just be the jsFiddle, but somehow I doubt it).
– earcam
Aug 30 '12 at 16:20
...
Single controller with multiple GET methods in ASP.NET Web API
...tpMethodConstraint(HttpMethod.Post)});
I verified this solution with the test class below. I was able to successfully hit each method in my controller below:
public class TestController : ApiController
{
public string Get()
{
return string.Empty;
}
public string Get(int ...