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Replacing all non-alphanumeric characters with empty strings
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Use [^A-Za-z0-9].
Note: removed the space since that is not typically considered alphanumeric.
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How to get the name of a function in Go?
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@themihai I don't know, the sentence I quoted is all the docs at golang.org/pkg/reflect/#Value.Pointer say about this. But the quote seems to indicate that one could get the same pointer for different functions, doesn't it? And if this is the case, GetFunctionName might r...
Computed / calculated / virtual / derived columns in PostgreSQL
...(Not in Postgres 13, yet) .
Related:
Attribute notation for function call gives error
Until then, you can emulate VIRTUAL generated columns with a function using attribute notation (tbl.col) that looks and works much like a virtual generated column. That's a bit of a syntax oddity which exi...
add maven repository to build.gradle
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You will need to define the repository outside of buildscript. The buildscript configuration block only sets up the repositories and dependencies for the classpath of your build script but not your application.
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How to copy yanked text to VI command prompt
...ile path, the line feed will by pasted as well ... i.e.
:! touch src/bash/script.sh^M
WILL create a "funny file path" containing the "\r" if you do not remove the last ^M ...
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What's the idiomatic syntax for prepending to a short python list?
... @MattM. If you insert at the front of a list, python has to move all the other items one space forwards, lists can't "make space at the front". collections.deque (double ended queue) has support for "making space at the front" and is much faster in this case.
– fejfo
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Linux下部署企业级邮件服务器(postfix + dovecot + extmail) - 开源 & Gith...
...环境配置
1、安装一下过程中所依赖的一些rpm包
yum install -y tcl-devel libart_lgpl-devel libtool-ltdl-devel
2、关闭sendmail，并取消其开机启动
service sendmail stop
chkconfig sendmail off
3、配置编译环境，安装开发包组
yum groupinstall -y "Develop...
How to write to a JSON file in the correct format
...lled the Ubuntu package ruby-json:
apt-get install ruby-json
I wrote the script in ${HOME}/rubybin/jsonDEMO
$HOME/.bashrc included:
${HOME}/rubybin:${PATH}
(On this occasion I also typed the above on the bash command line.)
Then it worked when I entered on the command line:
jsonDemo
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Why can't I assign a *Struct to an *Interface?
... var pi *Interface
pi = new(Interface)
*pi = ps
_, _ = pi, ps
}
Compiles OK. See also here.
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Save bitmap to location
...my image in canvas it is very small. any reason?
– AZ_
Mar 18 '11 at 13:24
3
@Aizaz This will not...