大约有 16,000 项符合查询结果（耗时：0.0546秒） [XML]
static const vs #define
.... It also has the advantage that it has no type, so it can be used for any integer value without generating warnings.
Advantages of "const"s are that they can be scoped, and they can be used in situations where a pointer to an object needs to be passed.
I don't know exactly what you are getting at...
What's the best way to do a backwards loop in C/C#/C++?
...ould say that the most typographically pleasing way of doing this is
for (int i = myArray.Length; i --> 0; )
{
//do something
}
share
|
improve this answer
|
follow
...
What is the difference between i++ and ++i?
...like to know when to use i++ or ++i ( i being a number variable like int , float , double , etc). Anyone who knows this?
...
C99 stdint.h header and MS Visual Studio
To my amazement I just discovered that the C99 stdint.h is missing from MS Visual Studio 2003 upwards. I'm sure they have their reasons, but does anyone know where I can download a copy? Without this header I have no definitions for useful types such as uint32_t, etc.
...
Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?
...ze of 64 bytes. Each line can hold 8 of the elements in the matrix (64-bit int).
The critical stride would be 2048 bytes, which correspond to 4 rows of the matrix (which is continuous in memory).
Assume we're processing row 28. We're attempting to take the elements of this row and swap them with...
Check time difference in Javascript
...diff = date2 - date1;
// 28800000 milliseconds (8 hours)
You can then convert milliseconds to hour, minute and seconds like this:
var msec = diff;
var hh = Math.floor(msec / 1000 / 60 / 60);
msec -= hh * 1000 * 60 * 60;
var mm = Math.floor(msec / 1000 / 60);
msec -= mm * 1000 * 60;
var ss = Ma...
How to delete items from a dictionary while iterating over it?
...t.keys() returns an iterator not a list.
As pointed out in comments simply convert mydict.keys() to a list by list(mydict.keys()) and it should work.
A simple test in the console shows you cannot modify a dictionary while iterating over it:
>>> mydict = {'one': 1, 'two': 2, 'three': 3...
Returning a value from thread?
... thread finishes
//(because of obtaining the value of the Result property)
int result = Task.Factory.StartNew(() => {
//Some work...
return 42;}).Result;
.NET 4.5+:
Starting with .NET 4.5 you could also use async/await keywords to return value from task directly instead of obtaining Re...
Generate fixed length Strings filled with whitespaces
...we can use the method java.lang.String.format(String, Object...) and use printf like format.
The format string "%1$15s" do the job. Where 1$ indicates the argument index, s indicates that the argument is a String and 15 represents the minimal width of the String.
Putting it all together: "%1$15s".
...
Commit only part of a file in Git
...nted by lines beginning with "-". You can prevent staging their removal by converting the "-" to a " " (space).
modified content:
Modified content is represented by "-" lines (removing the old content) followed by "+" lines (adding the replacement content). You can prevent staging the modifica...