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Read only the first line of a file?
How would you get only the first line of a file as a string with Python?
8 Answers
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HMAC-SHA1 in bash
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Copy/duplicate database without using mysqldump
... using mysqldump and mysql from bash becomes much simpler if you set up you .my.cnf file to store your user/host/password files
– ErichBSchulz
Nov 11 '12 at 4:33
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pythonic way to do something N times without an index variable?
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A slightly faster approach than looping on xrange(N) is:
import itertools
for _ in itertools.repeat(None, N):
do_something()
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How do I clear my local working directory in Git? [duplicate]
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To reset a specific file to the last-committed state (to discard uncommitted changes in a specific file):
git checkout thefiletoreset.txt
This is mentioned in the git status output:
(use "git checkout -- <file>..." to di...
What is the shortcut in IntelliJ IDEA to find method / functions?
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@sealskej it's called "File Structure" on the keymap setting.
– shanwu
Nov 20 '16 at 12:50
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Count how many files in directory PHP
I'm working on a slightly new project. I wanted to know how many files are in a certain directory.
15 Answers
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6个变态的C语言Hello World程序 - 创意 - 清泛网 - 专注C/C++及内核技术
...个需要动用C++的编译器g++才能编程通过。
hello1.c
#define _________ }
#define ________ putchar
#define _______ main
#define _(a) ________(a);
#define ______ _______(){
#define __ ______ _(0x48)_(0x65)_(0x6C)_(0x6C)
#define ___ _(0x6F)_(0x2C)_(0x20)_(0x77)_(0x6F)
#define ...
How do I print a double value without scientific notation using Java?
...cimalFormat.
DecimalFormat df = new DecimalFormat("#");
df.setMaximumFractionDigits(8);
System.out.println(df.format(myvalue));
//Option 3, use printf.
System.out.printf("%.9f", myvalue);
System.out.println();
//Option 4, convert toBigDecimal...
总结const_cast、static_cast、dynamic_cast、reinterpret_cast - C/C++ - ...
...个类a是基类，b继承a，c和ab没有关系。
有一个函数void function(a&a);
现在有一个对象是b的实例b，一个c的实例c。
function(static_cast<a&>(b)可以通过而function(static<a&>(c))不能通过编译，因为在编译的时候编译器已经知道c和a的类型不...