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How to set current working directory to the directory of the script in bash?
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Try the following simple one-liners:
For all UNIX/OSX/Linux
dir=$(cd -P -- "$(dirname -- "$0")" && pwd -P)
Bash
dir=$(cd -P -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd -P)
Note: A double dash (--) is used in commands to sig...
Android 4.3 Bluetooth Low Energy unstable
... 4.3 and doesn't work for 128bit UUIDs in general.
Gatt always can process one command at a time. If several commands get called short after another, the first one gets cancelled due to the synchronous nature of the gatt implementation.
I often see even on modern devices with Android 5, that Wifi in...
Why use prefixes on member variables in C++ classes
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I'm all in favour of prefixes done well.
I think (System) Hungarian notation is responsible for most of the "bad rap" that prefixes get.
This notation is largely pointless in strongly typed languages e.g. in C++ "lpsz" to tell you that your string is a l...
Painless way to install a new version of R?
...de process for R (probably more relevant on Windows than Linux). Does anyone have a good trick for doing the upgrade, from installing the software to copying all the settings/packages over?
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How to split strings across multiple lines in CMake?
...at I do not know how to split a simple string into multiple lines to avoid one huge line. Consider this basic code:
7 Answe...
How to get orientation-dependent height and width of the screen?
...you are in, and
Account for the status bar height (if shown)
Links
Iphone: Get current view dimensions or screen dimensions
IPhone/IPad: How to get screen width programmatically?
Objective C - how to get current screen resolution?
“Incorrect” frame / window size after re-orientation in iPho...
How to solve java.lang.NoClassDefFoundError?
... This answer is not correct the way you write it. Correct would be: "ONE possible cause of this error is...." But there may be other reasons why you get this error for example when loading a JAR file at runtime with a classloader.
– Elmue
Feb 23 '17 at 3:...
Git authentication fails after enabling 2FA
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You need to generate an access token. You can create one by going to your settings page.
Use this access token as your password in the command line.
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When and why I should use session_regenerate_id()?
...says, it is a function that will replace the current session ID with a new one, and keep the current session information.
What does it do?
It mainly helps prevent session fixation attacks. Session fixation attacks is where a malicious user tries to exploit the vulnerability in a system to fixate (se...
.NET Global exception handler in console application
...on handler for unhandled exceptions in my console application. In asp.net, one can define one in global.asax, and in windows applications /services, one can define as below
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