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Why is “a” != “a” in C?
...ue, depending on your compiler, which may combine equal strings at compile time into one to save space.
When you're comparing two character values (which are not pointers), it is a numeric comparison. For example:
'a' == 'a' // always true
...
dropping infinite values from dataframes in pandas?
... setting levels instead of operational level. This could potentially saves time imputing the values first.
– TaoPR
Oct 1 '19 at 14:35
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Entity Framework 4 Single() vs First() vs FirstOrDefault()
I'm having a devil of a time finding a comparison of the different ways to query for a single item, and when to use each.
6...
How can I get query string values in JavaScript?
...rByName('qux'); // null (absent)
Note: If a parameter is present several times (`?foo=lorem&foo=ipsum`), you will get the first value (`lorem`). There is no standard about this and usages vary, see for example this question: [Authoritative position of duplicate HTTP GET query keys](https://sta...
Good MapReduce examples [closed]
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The most common example of mapreduce is for counting the number of
times words occur in a corpus. Suppose you had a copy of the internet
(I've been fortunate enough to have worked in such a situation), and
you wanted a list of every word on the internet as well as how many
times it occ...
How do you 'redo' changes after 'undo' with Emacs?
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To undo: C-_
To redo after a undo: C-g C-_
Type multiple times on C-_ to redo what have been undone by C-_
To redo an emacs command multiple times, execute your command then type C-xz and then type many times on z key to repeat the command (interesting when you want to execute ...
HashMap to return default value for non-found keys?
... getOrDefault is very nice, but requires the default definition every time the map is accessed. Defining a default value once would also have readability benefits when creating a static map of values.
– ach
Aug 4 '14 at 14:19
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How do I initialize a byte array in Java?
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Smallest internal type, which at compile time can be assigned by hex numbers is char, as
private static final char[] CDRIVES_char = new char[] {0xe0, 0xf4, ...};
In order to have an equivalent byte array one might deploy conversions as
public static byte[] char...
Is there a vim command to relocate a tab?
...b using mouse, I can no longer resize the pane using mouse. Instead, every time I click and drag mouse cursor, the tabs rearrange again, as if the mouse click "stuck". Do you have any idea what might be going on here?
– gmile
May 2 '17 at 9:26
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Use of 'const' for function parameters
... a long function written by more than one programmer over a long period of time. I would strongly suggest to write int getDouble( const int a ){ //... } that will generate a compile error when finding ++a;.
– dom_beau
Mar 27 '17 at 3:58
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