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Placeholder Mixin SCSS/CSS
...nnested:
@mixin optional-at-root($sel) {
@at-root #{if(not &, $sel, selector-append(&, $sel))} {
@content;
}
}
@mixin placeholder {
@include optional-at-root('::-webkit-input-placeholder') {
@content;
}
@include optional-at-root(':-moz-placeholder') {
@content;
}
...
How do I list all files of a directory?
...'work.txt', '3ebooks.txt', 'documents']
glob
I found glob easier to select the file of the same type or with something in common. Look at the following example:
import glob
txtfiles = []
for file in glob.glob("*.txt"):
txtfiles.append(file)
glob with list comprehension
import glo...
Is asynchronous jdbc call possible?
... busy/blocked per concurrent request.
If the underlying database drivers (MySql?) offers a means to intercept the socket creation (see SocketFactory) then I imagine it would be possible to build an async event driven database layer on top of the JDBC api but we'd have to encapsulate the whole JDBC ...
Heroku 'Permission denied (publickey) fatal: Could not read from remote repository' woes
...rect path to .ssh/somegoodname_rsa)
Add the key to Heroku heroku keys:add
Select a created key from a list
Go to your app directory, write some beautiful code
Init a git repo git init git add . git commit -m 'chore(release): v0.0.1
Create Heroku application heroku create
Deploy your app git push he...
What is the fastest/most efficient way to find the highest set bit (msb) in an integer in C?
...zeof(uint32_t));
return (tmp>>20)-1023;
Or in C99 and later, use a union {double d; uint32_t u[2];};. But note that in C++, union type punning is only supported on some compilers as an extension, not in ISO C++.
This will usually be slower than a platform-specific intrinsic for a leading...
How to upgrade all Python packages with pip?
... install pip-review
$ py -3 -m pip_review --local --interactive
You can select 'a' to upgrade all packages; if one upgrade fails, run it again and it continues at the next one.
share
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improve th...
Linux日志管理Rsyslog入门 - C/C++ - 清泛网移动版 - 专注IT技能提升
...这里着重与快速上手。
安装配置
我以CentOS为例，说明如何通过RPM来安装Rsyslog：
shell> cd /etc/yum.repos.d/
shell> wget http://rpms.adiscon.com/v8-stable/rsyslog.repo
shell> yum install rsyslog
安装完成后，我们可以查看一下到底都装了些什么东西...
Linux日志管理Rsyslog入门 - C/C++ - 清泛网移动版 - 专注IT技能提升
...这里着重与快速上手。
安装配置
我以CentOS为例，说明如何通过RPM来安装Rsyslog：
shell> cd /etc/yum.repos.d/
shell> wget http://rpms.adiscon.com/v8-stable/rsyslog.repo
shell> yum install rsyslog
安装完成后，我们可以查看一下到底都装了些什么东西...
Linux日志管理Rsyslog入门 - C/C++ - 清泛网移动版 - 专注IT技能提升
...这里着重与快速上手。
安装配置
我以CentOS为例，说明如何通过RPM来安装Rsyslog：
shell> cd /etc/yum.repos.d/
shell> wget http://rpms.adiscon.com/v8-stable/rsyslog.repo
shell> yum install rsyslog
安装完成后，我们可以查看一下到底都装了些什么东西...
Linux日志管理Rsyslog入门 - C/C++ - 清泛网移动版 - 专注IT技能提升
...这里着重与快速上手。
安装配置
我以CentOS为例，说明如何通过RPM来安装Rsyslog：
shell> cd /etc/yum.repos.d/
shell> wget http://rpms.adiscon.com/v8-stable/rsyslog.repo
shell> yum install rsyslog
安装完成后，我们可以查看一下到底都装了些什么东西...