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What's the difference between Unicode and UTF-8? [duplicate]
...de’ encoding actually.
This is an unfortunate misnaming perpetrated by Windows.
Because Windows uses UTF-16LE encoding internally as the memory storage format for Unicode strings, it considers this to be the natural encoding of Unicode text. In the Windows world, there are ANSI strings (the sys...
What column type/length should I use for storing a Bcrypt hashed password in a Database?
...ding alphabet) consisting of:
22 characters of salt (effectively only 128 bits of the 132 decoded bits)
31 characters of encrypted output (effectively only 184 bits of the 186 decoded bits)
Thus the total length is 59 or 60 bytes respectively.
As you use the 2a format, you’ll need 60 bytes. An...
浅谈TCP优化 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...小，也就是说最大值是64KB，如果超过它，就需要使用tcp_window_scaling机制。参考：TCP Windows and Window Scaling。
Linux中通过配置内核参数里接收缓冲的大小，进而可以控制接收窗口的大小：
shell> sysctl -a | grep mem
net.ipv4.tcp_rmem = <MIN>...
Why is creating a new process more expensive on Windows than Linux?
I've heard that creating a new process on a Windows box is more expensive than on Linux. Is this true? Can somebody explain the technical reasons for why it's more expensive and provide any historical reasons for the design decisions behind those reasons?
...
Win7以上操作系统清理系统图标缓存脚本 - 更多技术 - 清泛网 - 专注C/C++及内核技术
Win7以上操作系统清理系统图标缓存脚本rem 关闭Windows外壳程序explorertaskkill f im explorer.exerem 清理系统图标缓存数据库attrib -h -s -r "%userprofile% AppDa...
rem 关闭Windows外壳程序explorer
taskkill /f /im explorer.exe
rem 清理系统图标缓存数据...
How do I encode and decode a base64 string?
...us (plus we're all slowly agreeing to the fact that null as a concept is a bit of a hack to begin with), but we can still see some effects otherwise: the parameter name given in the exception might not be correct if left unchecked.
– tne
Aug 19 '15 at 8:57
...
UnicodeDecodeError, invalid continuation byte
...e and there is no char corresponding to your combination of \xe9 plus following space.
Why should it succeed in both utf-8 and latin-1?
Here how the same sentence should be in utf-8:
>>> o.decode('latin-1').encode("utf-8")
'a test of \xc3\xa9 char'
...
Copying text with color from Notepad++
...update As of 2019 NppExport is not included by default in the Notepad++ 64 bits version (github issue). You can download the 64 bits version of NppExport here: [github]
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What do linkers do?
...eeds to be relocated, here we have only one for the string.
Simplifying a bit, for this particular line we have the following information:
Offset = C: what is the first byte of the .text that this entry changes.
If we look back at the decompiled text, it is exactly inside the critical movabs $0x...
Quick and easy file dialog in Python?
... only the dialog without any other GUI elements, you have to hide the root window using the withdraw method:
import tkinter as tk
from tkinter import filedialog
root = tk.Tk()
root.withdraw()
file_path = filedialog.askopenfilename()
Python 2 variant:
import Tkinter, tkFileDialog
root = Tkinte...