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Split list into multiple lists with fixed number of elements
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I think you're looking for grouped. It returns an iterator, but you can convert the result to a list,
scala> List(1,2,3,4,5,6,"seven").grouped(4).toList
res0: List[List[Any]] = List(List(1, 2, 3, 4), List(5, 6, seven))
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Is there a [Go to file…]?
In modern IDEs, there is a keyboard shortcut to open a file by typing its name without putting your hand on the mouse. For example:
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Open files in 'rt' and 'wt' modes
...t exists
'b' binary mode
't' text mode (default)
'+' open a disk file for updating (reading and writing)
'U' universal newlines mode (deprecated)
The default mode is 'r' (open for reading text, synonym of 'rt').
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Returning null as an int permitted with ternary operator but not if statement
Let's look at the simple Java code in the following snippet:
8 Answers
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How to undo 'git reset'?
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Short answer:
git reset 'HEAD@{1}'
Long answer:
Git keeps a log of all ref updates (e.g., checkout, reset, commit, merge). You can view it by typing:
git reflog
Somewhere in this list is the commit that you lost. Let's say you just typed git reset HEAD~ and want to undo it....
How to crop an image in OpenCV using Python
How can I crop images, like I've done before in PIL, using OpenCV.
8 Answers
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What is the difference between 'java', 'javaw', and 'javaws'?
...by starting a Java runtime environment, loading a specified class, and invoking that class's main method.
The javaw command is identical to java, except that with javaw there is no associated console window. Use javaw when you don't want a command prompt window to appear.
javaws command, the "Jav...
Black transparent overlay on image hover with only CSS?
I'm trying to add a transparent black overlay to an image whenever the mouse is hovering over the image with only CSS. Is this possible? I tried this:
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How to modify a text file?
I'm using Python, and would like to insert a string into a text file without deleting or copying the file. How can I do that?
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In C#, should I use string.Empty or String.Empty or “” to intitialize a string?
...rson to person - so I suggest you find out what most people on your team like, and all go with that for consistency. Personally I find "" easier to read.
The argument that "" and " " are easily mistaken for each other doesn't really wash with me. Unless you're using a proportional font (and I haven...