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NSString tokenize in Objective-C
... As a reference to future readers, I'd like to note that the opposite is [anArray componentsJoinedByString:@":"];.
– Ivan Vučica
Feb 6 '12 at 18:12
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Delete empty lines using sed
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You may have spaces or tabs in your "empty" line. Use POSIX classes with sed to remove all lines containing only whitespace:
sed '/^[[:space:]]*$/d'
A shorter version that uses ERE, for example with gnu sed:
sed -r '/^\s*$/d'
(Note that sed does NOT support PCRE.)
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Undefined reference to `sin` [duplicate]
...g, and is known by many names (IEEE Std 1003.1, X/Open Portability Guide, POSIX, Spec 1170).
This standard, specifically separates out the "Standard C library" routines from the "Standard C Mathematical Library" routines (page 277). The pertinent passage is copied below:
Standard C Library
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Pipe to/from the clipboard in Bash script
Is it possible to pipe to/from the clipboard in Bash?
29 Answers
29
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Getting Python error “from: can't read /var/mail/Bio”
...ntally, from is the name of a command line utility which prints names of those who have sent mail to the given username, so that's why it tries to access the mailboxes).
Another possibility is to add the following line to the top of the script:
#!/usr/bin/env python
This will instruct your shell...
ExecJS and could not find a JavaScript runtime
...to run:
sudo apt-get install nodejs
This will solve the problem.
CentOS/RedHat Users
sudo yum install nodejs
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Windows: XAMPP vs WampServer vs EasyPHP vs alternative [closed]
...ked here three years ago, but I want to open it up further to include all possible Windows/Apache/MySQL/PHP stacks.
5 Answe...
How can a windows service programmatically restart itself?
...(double click the service in the control panel and have a look around on those tabs - I forget the name of it). Then, anytime you want the service to restart, just call Environment.Exit(1) (or any non-zero return) and the OS will restart it for you.
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Loader lock error
...ult (reset all), the debug window shows <mda:msg xmlns:mda="schemas.microsoft.com/CLR/2004/10/mda"> <!-- Attempting managed execution inside OS Loader lock.... etc --> <mda:loaderLockMsg break="true"/> </mda:msg> VS then presents multiple breakpoints during t...
Images can't contain alpha channels or transparencies
...FAIK png with transparency is not allowed. use jpg OR update your png (photoshop or whatever you using to create the png) and delete the transparency areas. if you work with shadows, use jpg, that will do no headaches.
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