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How does the vim “write with sudo” trick work?
Many of you have probably seen the command that allows you to write on a file that needs root permission, even when you forgot to open vim with sudo:
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Strange SQLAlchemy error message: TypeError: 'dict' object does not support indexing
... value with this.
So when you want to place single % in string with query allways place double %.
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What's the cleanest way of applying map() to a dictionary in Swift?
I'd like to map a function on all keys in the dictionary. I was hoping something like the following would work, but filter cannot be applied to dictionary directly. What's the cleanest way of achieving this?
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Check if my app has a new version on AppStore
I would like to manually check if there are new updates for my app while the user is in it, and prompt him to download the new version. Can I do this by checking the version of my app in the app store - programatically?
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How to know if two arrays have the same values
..., i.e. ['a', 'b'] and ['a,b']. I would only recommend this technique for small throwaway scripts.
– alex
Mar 7 '16 at 16:23
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Get environment variable value in Dockerfile
... Very nice solution! On a Mac you can get envsubst as part of brew install gettext. But because of possible conflicts with the BSD build system it is "keg-only" and no symlnks are made. However, it is safe to do ln -s /usr/local/Cellar/gettext/*/bin/envsubst /usr/local/bin/ to add that one comma...
What is a regular expression for a MAC Address?
...at" comes from Wikipedia, not the 802.3 standards body. IEEE 802-2014 actually specifies hyphens for ordinary MAC addresses (§ 8.1 ¶ 3) and colons for the obsolescent bit-reversed notation (¶ 4). Importantly, in practice, no one observes this. We simply use one or the other, but never mix them...
Multiple Inheritance in PHP
...tMessage class, and sending algorithm is delegated to dispatcher. This is called Strategy Pattern, you can read more on it here.
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How to increase the vertical split window size in Vim
:vsplit (short form: :vs ) split the Vim viewport vertically. :30vs splits the viewport, making the new window 30 characters wide. Once this 30 char window is created, how would one change it's size to 31 or 29?
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When should I use GET or POST method? What's the difference between them?
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What I meant was that contents of $_POST is not magically hidden from malicious users. There are obviously security aspects to all thing programming.
– troelskn
Feb 2 '09 at 22:34
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