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Draw in Canvas by finger, Android
I need to build a project for drawing on canvas by fingers,
6 Answers
6
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Display name of the current file in vim?
How do you display the filename of the file you are working on in vim?
9 Answers
9
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Clear terminal in Python [duplicate]
Does any standard "comes with batteries" method exist to clear the terminal screen from a Python script, or do I have to go curses (the libraries, not the words)?
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top命令使用详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...交互式命令或者在个人定制文件中进行设定.
top [-] [d delay] [p pid] [q] [c] [C] [S] [s] [i] [n iter] [b]
p 仅监视进程给定的进程ID
d 指定每两次屏幕信息刷新之间的时间间隔。当然用户可以使用s交互命令来改变之。
q 该选项将使top没有...
What generates the “text file busy” message in Unix?
What operation generates the error "text file busy"? I am unable to tell exactly.
12 Answers
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Determining 32 vs 64 bit in C++
I'm looking for a way to reliably determine whether C++ code is being compiled in 32 vs 64 bit. We've come up with what we think is a reasonable solution using macros, but was curious to know if people could think of cases where this might fail or if there is a better way to do this. Please note we ...
Getting and removing the first character of a string
I would like to do some 2-dimensional walks using strings of characters by assigning different values to each character. I was planning to 'pop' the first character of a string, use it, and repeat for the rest of the string.
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vim 命令与快捷键 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...a:光标前A:行末o:光标后插入新行O:光标上插入新行定位h:leftj:downk:upl:right$:行尾0：行首H:...:set nu 设置行号
插入命令
i：光标后
I：行首
a:光标前
A:行末
o:光标后插入新行
O:光标上插入新行
定位
h:left
j:down
k:up
l:right
$:行...
Practical usage of setjmp and longjmp in C
Can anyone explain me where exactly setjmp() and longjmp() functions can be used practically in embedded programming? I know that these are for error handling. But I'd like to know some use cases.
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How do I detect unsigned integer multiply overflow?
I was writing a program in C++ to find all solutions of a b = c , where a , b and c together use all the digits 0-9 exactly once. The program looped over values of a and b , and it ran a digit-counting routine each time on a , b and ab to check if the digits condition was satisfied.
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