大约有 45,000 项符合查询结果（耗时：0.0314秒） [XML]
How do you run your own code alongside Tkinter's event loop?
...roperly and cleanly close when the [X] button was clicked, this along with win32gui.FindWindow(None, 'window title') did the trick! I'm such a noob ;-)
– JxAxMxIxN
Oct 16 '16 at 14:48
...
How long is the SHA256 hash?
...
A sha256 is 256 bits long -- as its name indicates.
Since sha256 returns a hexadecimal representation, 4 bits are enough to encode each character (instead of 8, like for ASCII), so 256 bits would represent 64 hex characters, therefore you n...
Enum type constraints in C# [duplicate]
... that might have been for Delegate. I'd be happy to experiment with this a bit more (heck, a lot more) if it might mean the restrictions being removed from C# 5. (I assume C# 4 is locked down now.)
– Jon Skeet
Sep 10 '09 at 8:52
...
What is the difference between user and kernel modes in operating systems?
...T instructions.
cannot do IO instructions like in and out, and thus have arbitrary hardware accesses.
Otherwise, for example, file permissions would be useless if any program could directly read from disk.
More precisely thanks to Michael Petch: it is actually possible for the OS to allow IO instr...
PHP random string generator
...itive integer");
}
$pieces = [];
$max = mb_strlen($keyspace, '8bit') - 1;
for ($i = 0; $i < $length; ++$i) {
$pieces []= $keyspace[random_int(0, $max)];
}
return implode('', $pieces);
}
Usage:
$a = random_str(32);
$b = random_str(8, 'abcdefghijklmnopqrstuvwxyz')...
Why does Math.round(0.49999999999999994) return 1?
...void print(double d) {
System.out.printf("%016x\n", Double.doubleToLongBits(d));
}
public static void main(String args[]) {
double a = 0.5;
double b = 0.49999999999999994;
print(a); // 3fe0000000000000
print(b); // 3fdfffffffffffff
print(a+b); // 3ff00000000000...
Replacing .NET WebBrowser control with a better browser, like Chrome?
...Framework and has been used in a number of major projects including Rdio's Windows client, Facebook Messenger for Windows and Github for Windows.
It features browser controls for WPF and Winforms and has tons of features and extension points. Being based on Chromium it's blisteringly fast too.
Gr...
How can I use PowerShell with the Visual Studio Command Prompt?
...\vc\vcvarsall.bat"
Invokes the vcvarsall.bat file to set up a 32-bit dev environment. All
environment variable changes it makes will be propagated to the current
PowerShell session.
.EXAMPLE
C:\PS> Invoke-BatchFile "$env:VS90COMNTOOLS\..\..\vc\vcvarsall.bat" amd64
I...
Call int() function on every list element?
...2.7.13:a06454b1afa1, Dec 17 2016, 20:42:59) [MSC v.1500 32 bit (Intel)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> import timeit
>>> setup = """import random
random.seed(10)
l = [str(random.randint(0, 99)) for i in range(100)]"""
>>> time...
What does “dereferencing” a pointer mean?
...example, if the string literal happened to be at address 0x1000 and p a 32-bit pointer at 0x2000, the memory content would be:
Memory Address (hex) Variable name Contents
1000 'a' == 97 (ASCII)
1001 'b' == 98
1002 ...