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How can I get a count of the total number of digits in a number?
...s (discussed below), depending on your choice of Platform / Framework.
Int32 version:
public static class Int32Extensions
{
// IF-CHAIN:
public static int Digits_IfChain(this int n)
{
if (n >= 0)
{
if (n < 10) return 1;
if (n < 100) retu...
How can I generate random alphanumeric strings?
...but the characters are restricted to A-F0-9 and the max possible length is 32 chars.
– LukeH
Aug 28 '09 at 1:01
1
...
Why does the 260 character path length limit exist in Windows?
...ealize that the system tracked the current path per drive, and we have 26 (32 with symbols) maximum drives (and current directories).
The INT 0x21 AH=0x47 says “This function returns the path description without the drive letter and the initial backslash.” So we see that the system stores the C...
Explain the use of a bit vector for determining if all characters are unique
... between them:
Size. int has fixed size, usually 4 bytes which means 8*4=32 bits (flags). Bit vector usually can be of different size or you should specify the size in constructor.
API. With bit vectors you will have easier to read code, probably something like this:
vector.SetFlag(4, true); // s...
Value of type 'T' cannot be converted to
...
– Fernando Gómez
May 30 '19 at 23:32
|
show 2 more comme...
How can I create a UIColor from a hex string?
...
132
This is great except it doesn't do what the questioner asks, which is to convert a hex STRING into a UIColor. This converts an integer to a...
Getting name of windows computer running python script?
...hon scrips are for sure running on a windows system, you should use the Win32 API GetComputerName or GetComputerNameEx
You can get the fully qualified DNS name, or NETBIOS name, or a variety of different things.
import win32api
win32api.GetComputerName()
>>'MYNAME'
Or:
import win32api
WI...
Why is early return slower than else?
...984281521812363]
>>> T(lambda : with_else()).repeat()
[0.36009842032996175, 0.28962249392031936, 0.2927151355828528]
>>> T(lambda : without_else(True)).repeat()
[0.31709728471076915, 0.3172671387005721, 0.3285821242644147]
>>> T(lambda : with_else(True)).repeat()
[0.309398...
What is the tilde (~) in the enum definition?
...op Vaidya
45.1k1313 gold badges103103 silver badges132132 bronze badges
answered Dec 22 '08 at 21:38
JimmyJimmy
77.8k1616 gold bad...
内存优化总结:ptmalloc、tcmalloc和jemalloc - 操作系统(内核) - 清泛网 - ...
...内存容易造成内存碎片，不利于回收。 64位系统最好分配32M以上内存，这是使用mmap的阈值。
tcmalloc
tcmalloc是Google开源的一个内存管理库， 作为glibc malloc的替代品。目前已经在chrome、safari等知名软件中运用。
根据官方测试报...