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What does character set and collation mean exactly?
...a symbol, the number 0 is the
encoding for 'A', and the combination
of all four letters and their
encodings is a character set.
Now, suppose that we want to compare
two string values, 'A' and 'B'. The
simplest way to do this is to look at
the encodings: 0 for 'A' and 1 for
'B'. Be...
How to call asynchronous method from synchronous method in C#?
I have a public async void Foo() method that I want to call from synchronous method. So far all I have seen from MSDN documentation is calling async methods via async methods, but my whole program is not built with async methods.
...
iTerm2 keyboard shortcut - split pane navigation
I have been a long time user of the standard Mac Terminal. Decided to experiment with iTerm2 after hearing good things about it from my colleagues.
...
How can I recall the argument of the previous bash command?
Is there a way in Bash to recall the argument of the previous command?
7 Answers
7
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How to paste yanked text into the Vim command line
...you know how to use them you cannot live without them.
Registers are basically storage locations for strings. Vim has many registers that work in different ways:
0 (yank register: when you use y in normal mode, without specifying a register, yanked text goes there and also to the default register...
git error: failed to push some refs to remote
...e GitHub repo has seen new commits pushed to it, while you were working locally, I would advise using:
git pull --rebase
git push
The full syntax is:
git pull --rebase origin master
git push origin master
With Git 2.6+ (Sept. 2015), after having done (once)
git config --global pull.rebase tru...
How to change the background color of the options menu?
...
After spending a considerable amount of time trying all the options, the only way I was able to get an app using AppCompat v7 to change the overflow menu background was using the itemBackground attribute:
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar"&...
Hidden features of Perl?
What are some really useful but esoteric language features in Perl that you've actually been able to employ to do useful work?
...
Microbit 板载引脚 · App Inventor 2 中文网
...回首页
Microbit Io Pin：板载引脚
Microbit_Io_Pin 组件允许用户配置 BBC micro:bit 的模拟引脚用于输入和输出，以及读取、写入和请求 I/O 引脚状态的通知。
更多链接：
RGB LED 控制：示例项目和教程。
读取旋钮状...
Real differences between “java -server” and “java -client”?
...
This is really linked to HotSpot and the default option values (Java HotSpot VM Options) which differ between client and server configuration.
From Chapter 2 of the whitepaper (The Java HotSpot Performance Engine Architecture):
The JD...