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In Python how should I test if a variable is None, True or False
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a = 'foo' if a: print 'its true' a is not actually TRUE, it's just not none
– wesm
Apr 3 '15 at 21:06
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PHP how to get local IP of system
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This is the solution that worked for me and that avoids calling shells, operating system commands and all sorts of stuff that can open security holes or raise odd issues later.
– Dario Fumagalli
Jul 17 '14 at 10:59
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MLKitFaceMesh 拓展：面部网格（468 个关键点） · App Inventor 2 中文网
... 事件
方法
运行环境：AI 伴侣联机需要 Android 11 及以上
常见问题
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MLKitFaceMesh 拓展
检测 468 个面部关键点（带 x/y/z 坐标），用于 AR 贴纸定位、美颜、面部特效。
为什么选它...
error: 'Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)' — Miss
...rted off with me not being able to log in as root any more on my mysql install. I was attempting to run mysql without passwords turned on... but whenever I ran the command
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How to programmatically determine the current checked out Git branch [duplicate]
...ions/git-completion.bash does that for bash prompt in __git_ps1. Removing all extras like selecting how to describe detached HEAD situation, i.e. when we are on unnamed branch, it is:
branch_name="$(git symbolic-ref HEAD 2>/dev/null)" ||
branch_name="(unnamed branch)" # detached HEAD
branc...
Profiling Vim startup time
... if you want it to just print it, try vim --startuptime /dev/stdout +qall
– Capi Etheriel
Jan 15 '13 at 17:37
1
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How to calculate age (in years) based on Date of Birth and getDate()
...ated method does not have the issue with leap years, I'd suggest (if you really want to keep it at all) to move it down the bottom of your answer.
– ajbeaven
Jul 4 '17 at 23:14
1
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Generate class from database table
...ar' then 'string'
when 'real' then 'float'
when 'smalldatetime' then 'DateTime'
when 'smallint' then 'short'
when 'smallmoney' then 'decimal'
when 'text' then 'string'
when 'time' then 'TimeSpan'
when 'timestamp' the...
界面高级组件 · App Inventor 2 中文网
...时，应用清单会声明能看到带桌面图标的其它 App（安卓 11 起必须声明才查得到），不需要受限的「查询所有应用」权限。
鸿蒙：「是否已安装」「打开应用」需要系统 5.0.2（API 14）及以上，更低版本一律当作未安装；通知设...
Check if a file exists with wildcard in shell script [duplicate]
...p;& echo "files do exist" || echo "files do not exist"
## This is all we needed to know, so we can break after the first iteration
break
done
This is very similar to @grok12's answer, but it avoids the unnecessary iteration through the whole list.
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