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Best way to pretty print a hash
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require 'pp'
pp my_hash
Use pp if you need a built-in solution and just want reasonable line breaks.
Use awesome_print if you can install a gem. (Depending on your users, you may wish to use the index:false option to turn off displaying arr...
How can I install pip on Windows?
...actics; perl being the only comparable exception. Ruby has gemsets, but in order to easily swap out Rubies, it's recommended to use either rbenv or rvm - both of which have always felt somewhat hackish to me (though they work beautifully once set up properly).
– AndrewPK
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Java: Class.this
...ter class's this". A class doesn't have any "this", only instances have in order to reference themselves...
– Żabojad
Aug 16 '17 at 13:04
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Effects of the extern keyword on C functions
...tion. It is ugly, and unnecessary 99.99% of the time (I could be off by an order or two or magnitude, overstating how often it is necessary). It usually occurs when people misunderstand that a header is only needed when other source files will use the information; the header is (ab)used to store de...
How can I use a search engine to search for special characters? [closed]
...ace before it, in which case it is a negative sign.)
The underscore symbol _ is not ignored when it connects two words, e.g. [ quick_sort ].
As such, it is not well suited for these types of searchs. Google Code however does have syntax for searching through their code projects, that includes a ro...
How to dismiss keyboard iOS programmatically when pressing return
...s delegate to current viewcontroller and then:
func textFieldShouldReturn(_ textField: UITextField) -> Bool {
textField.resignFirstResponder()
return true
}
Objective-C:
[self.view endEditing:YES];
or
Set text field's delegate to current viewcontroller and then:
- (BOOL)textFie...
What is the reason for performing a double fork when creating a daemon?
...On some flavors of Unix, you are forced to do a double-fork on startup, in order to go into daemon mode. This is because single forking isn’t guaranteed to detach from the controlling terminal."
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What character encoding should I use for a HTTP header?
...r LF or HT? Can header values contain the characters CR, LF, and HT in any order and amount?)
– Pacerier
Jul 29 '16 at 13:17
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Will HTML5 allow web apps to make peer-to-peer HTTP connections?
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UPDATE 10/17/2012: This functionality now exists in Chrome Stable v22. In order to use this functionality in Chrome, one must enable two flags in chrome://flags:
Enable MediaStream
Enable PeerConnection
Then you can visit the AppRTC Demo Page to try out the demo. See the WebRTC - Running the De...
When to use cla(), clf() or close() for clearing a plot in matplotlib?
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They all do different things, since matplotlib uses a hierarchical order in which a figure window contains a figure which may consist of many axes. Additionally, there are functions from the pyplot interface and there are methods on the Figure class. I will discuss both cases below.
pyplot ...