大约有 15,461 项符合查询结果（耗时：0.0305秒） [XML]
Casting vs using the 'as' keyword in the CLR
... below:
using System;
using System.Diagnostics;
using System.Linq;
class Test
{
const int Size = 30000000;
static void Main()
{
object[] values = new object[Size];
for (int i = 0; i < Size - 2; i += 3)
{
values[i] = null;
values[i + 1...
undefined reference to boost::system::system_category() when compiling
.../Programme/CPP-Entwicklung/boost_1_47_0/stage/lib \
D:/bfs_ENTW_deb/obj/test/main_filesystem.obj \
-o D:/bfs_ENTW_deb/bin/filesystem.exe -lboost_system-mgw45-mt-1_47 -lboost_filesystem-mgw45-mt-1_47
D:/bfs_ENTW_deb/obj/test/main_filesystem.obj:main_filesystem.cpp:(.text+0x54):
undefined r...
What is the perfect counterpart in Python for “while not EOF”
...line)
You need to use while True / break construct since there is no eof test in Python other than the lack of bytes returned from a read.
In C, you might have:
while ((ch != '\n') && (ch != EOF)) {
// read the next ch and add to a buffer
// ..
}
However, you cannot have this in...
vs vs for inline and block code snippets
...tag */
codenza {display:block;white-space:pre-wrap}
</style>`
Testing:
(NB: the following is a scURIple utilizing a data: URI protocol/scheme, therefore the %0A nl format codes are essential in preserving such when cut and pasted into the URL bar for testing - so view-source: (ctrl-U) ...
Make function wait until element exists
.... If it is a 3rd party code such as google maps) then what you could do is test for the existence in an interval:
var checkExist = setInterval(function() {
if ($('#the-canvas').length) {
console.log("Exists!");
clearInterval(checkExist);
}
}, 100); // check every 100ms
But note ...
Set type for function parameters?
...main idea, in a simplistic, but operative way :
/*
* checkType() : Test the type of the value. If succeds return true,
* if fails, throw an Error
*/
function checkType(value,type, i){
// perform the appropiate test to the passed
// value according to the provided type
switch(...
How to check if character is a letter in Javascript?
...
The code only tests whether the character is one of the basic letter from a to z (very few languages are written using only those letters). This is very different from the Java function that was mentioned.
– Jukka K. ...
Predicate in Java
...egular expression.
This is essentially an OOP abstraction for a boolean test.
For example, you may have a helper method like this:
static boolean isEven(int num) {
return (num % 2) == 0; // simple
}
Now, given a List<Integer>, you can process only the even numbers like this:
Lis...
How to validate phone numbers using regex
...ing fluff until you have just the "number". Doing this solves 2 problems - testing the result is now easy and you can now ensure that values rendered back out for display can all be formatted consistently. The first comment on this answer about the "Complicator's Gloves" is a good read... sometimes...
How slow are .NET exceptions?
...evolves around them being slow while the other side claims (with benchmark test) that the speed is not the issue. I've read numerous blogs, articles, and posts pertaining one side or the other. So which is it?
...