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LINQ - Convert List to Dictionary with Value as List
... the following
List<MyObject> list = ...;
var map = list
.GroupBy(x => x.KeyedProperty)
.ToDictionary(x => x.Key, x => x.ToList());
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What's the difference between Ruby's dup and clone methods?
...great comment, but it led me on a wild goose chase to understand that syntax. this will help anyone else out there who might also be confused: devalot.com/articles/2008/09/ruby-singleton
– davidpm4
Mar 15 '16 at 6:24
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Try catch statements in C
I was thinking today about the try/catch blocks existent in another languages. Googled for a while this but with no result. From what I know, there is not such a thing as try/catch in C. However, is there a way to "simulate" them?
Sure, there is assert and other tricks but nothing like try/catch, ...
Bash script prints “Command Not Found” on empty lines
...h
Enter your path to bash if it is not /bin/bash
Try running:
dos2unix script.sh
That wil convert line endings, etc from Windows to unix format. i.e. it strips \r (CR) from line endings to change them from \r\n (CR+LF) to \n (LF).
More details about the dos2unix command (man page)
Anoth...
Why when a constructor is annotated with @JsonCreator, its arguments must be annotated with @JsonPro
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@MariuszS That is true but this post explains how to get rid of extraneous annotations with the help of Java8 compiler flag and a Jackson module. I've tested the approach and it works.
– quantum
Sep 21 '15 at 17:46
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How do I view the type of a scala expression in IntelliJ
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Select expression and type Alt + =.
If you want to change the shortcut go to Preferences > Keymap and enter "Type Info" in the search field.
In older versions, it's Shift + Ctrl + Alt + T.
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What it the significance of the Javascript constructor property?
...actical difference to anything internally. It's only any use if your code explicitly uses it. For example, you may decide you need each of your objects to have a reference to the actual constructor function that created it; if so, you'll need to set the constructor property explicitly when you set u...
Java - get pixel array from image
I'm looking for the fastest way to get pixel data (int the form int[][] ) from a BufferedImage . My goal is to be able to address pixel (x, y) from the image using int[x][y] . All the methods I have found do not do this (most of them return int[] s).
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Git commit in terminal opens VIM, but can't get back to terminal
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To save your work and exit press Esc and then :wq (w for write and q for quit).
Alternatively, you could both save and exit by pressing Esc and then :x
To set another editor run export EDITOR=myFavoriteEdioron your terminal, where myFavoriteEdior...
Best practice: ordering of public/protected/private within the class definition?
... Constructors at the top, right after the member variables. In OOP, execution begins with object instantiation.
– Asaph
Nov 30 '14 at 21:01
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