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What is the email subject length limit?
...255 is probably the most common (and more efficient) data column length in MySQL / MariaDB. Bytes are most certainly still relevant. MySQL will use 1 byte to store the length if it is less than 256, or more otherwise. Take a look at how C++ implements std::string if you think string lengths aren'...
Python: Best way to add to sys.path relative to the current running script
...at if the script being runned from a different directory? for example from root directory by giving the full system path? then os.getcwd() will return "/"
– obayhan
Oct 12 '19 at 12:14
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SecurityException: Permission denied (missing INTERNET permission?)
...things are getting more tricky if you also do not mind your app running on rooted devices too. There're tools available in Google Play your users can install to control permission granted to installed apps at run-time - for example: Permissions Denied and others. This can also be done with CyanogenM...
Linux日志管理Rsyslog入门 - C/C++ - 清泛网移动版 - 专注C/C++及内核技术
...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...
Is there any performance gain in indexing a boolean field?
...e an index, if you have too many records it doesn't use the index anyways.
MySQL not using index when checking = 1 , but using it with = 0
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ExpressJS How to structure an application?
...mplified here. Just keep it simple and stick a handful of .js files in the root of your repository and you're done. Voilà.
If your application is huge, at some point you need to break it up into distinct npm packages. In general the node.js approach seems to favor many small packages, at least for...
How do I get an apk file from an Android device?
...missions to access the directory your file is in. If not, you will need to root the device first.
If you find that many of the APKs are named "base.apk" you can also use this one line command to pull all the APKs off a phone you can access while renaming any "base.apk" names to the package name. ...
Delete terminal history in Linux [closed]
...can use previous commands again. Great feature. However, I started logging mysql into mysql with the sensitive details in the command.
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Rename multiple files in a directory in Python [duplicate]
...cter, set of characters or no character.
import os
paths = (os.path.join(root, filename)
for root, _, filenames in os.walk('C:\FolderName')
for filename in filenames)
for path in paths:
# the '#' in the example below will be replaced by the '-' in the filenames in the director...
Good Free Alternative To MS Access [closed]
...ess, you generally want a database server engine, like MS SQL, Postgresql, MySQL, Oracle, or their brethren. At the same time, those server engines are rarely if ever appropriate for a single-user desktop application.
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