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Posts on QA

Questions and answers.

How to call a function by its name as a string in PHP?

By Q A | In QA, Tutorial | Updated on Nov 22, 2019
> How to call a function by its name as a string in PHP?

gdb like step by step debugger for Python

By Q A | In QA, Tutorial | Updated on Nov 22, 2019
> gdb like step by step debugger for Python

How to open a port in iptables?

By Q A | In QA, Tutorial | Updated on Nov 22, 2019
> How to open a port in iptables?

How to divert connection or packet before routing decision entering the default

By Q A | In QA, Tutorial | Updated on Nov 22, 2019
> How to divert connection or packet before routing decision entering the default

How to check whether a file of a given path is a block device in Python?

By Q A | In QA, Tutorial | Updated on Nov 22, 2019
> How to check whether a file of a given path is a block device in Python?

How to get the full path and directory of a Python script itself?

By Q A | In QA, Tutorial | Updated on Nov 22, 2019
> How to get the full path and directory of a Python script itself?

How to test a file or directory exists in C++?

By Q A | In QA, Tutorial | Updated on Nov 22, 2019
> How to test a file or directory exists in C++?

How to turn off WiFi and bluetooth easily in iOS 11?

By Q A | In QA, Tutorial | Updated on Nov 22, 2019
> How to turn off WiFi and bluetooth easily in iOS 11?

How to improve video rendering quality in MPlayer

By Q A | In QA, Tutorial | Updated on Oct 9, 2020
> How to improve video rendering quality in MPlayer

How to configure /dev/shm size of Linux?

By Q A | In QA, Tutorial | Updated on Nov 22, 2019
> How to configure /dev/shm size of Linux?

How to produce a patch file for a specific git commit?

By Eric Ma | In QA, Tutorial | Updated on Nov 22, 2019
> How to produce a patch file for a specific git commit?

How to exclude a package from a specific repository only in yum?

By Q A | In QA, Tutorial | Updated on Nov 22, 2019
> How to exclude a package from a specific repository only in yum?

How to clean the commit history of a repository?

By Q A | In QA, Tutorial | Updated on Nov 22, 2019
> How to clean the commit history of a repository?

How to escape the XML CData section ending sequence `]]>`?

By Q A | In QA, Tutorial | Updated on Nov 22, 2019
> How to escape the XML CData section ending sequence `]]>`?

How to resize a virtual disk of KVM

By Weiwei Jia | In QA | Updated on Jan 7, 2020
> How to resize a virtual disk of KVM

How to create a file if not exist and open it in read and write modes in C++?

By Q A | In QA, Tutorial | Updated on Nov 21, 2019
> How to create a file if not exist and open it in read and write modes in C++?

How to not use concrete types in lambda function parameters in C++11?

By Eric Ma | In QA | Updated on Nov 21, 2019
> How to not use concrete types in lambda function parameters in C++11?

How to check whether a string starts with another string in C++?

By Eric Ma | In Programming, QA, Tutorial | Updated on Oct 9, 2020
> How to check whether a string starts with another string in C++?

How to generate a password in Shell on Linux?

By Q A | In QA, Tutorial | Updated on Nov 21, 2019
> How to generate a password in Shell on Linux?

`readlink -m` equivalent function in Python to get canonical file name

By Q A | In Programming, QA, Tutorial | Updated on Oct 9, 2020
> `readlink -m` equivalent function in Python to get canonical file name
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