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What is a “symbol” in Julia?
... symbols are immutable, and symbols are also "interned" – whatever that means. Strings do happen to be mutable in Ruby and Lisp, but they aren't in Julia, and that difference is actually a red herring. The fact that symbols are interned – i.e. hashed by the language implementation for fast equ...
How to search by key=>value in a multidimensional array in PHP
...ny fast way to get all subarrays where a key value pair was found in a multidimensional array? I can't say how deep the array will be.
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Does opacity:0 have exactly the same effect as visibility:hidden
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"No it does not"? Is this meant as an answer to the Question, or as a response to one of the existing Answers? If it is the later, then it should be added as a comment under the answer it addresses.
– Chris Noe
D...
How to use WinForms progress bar?
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@KansaiRobot You mean as opposed to await DoWorkAsync(progress);? This is very much on purpose, as that would not result in an extra thread running. Only if DoWorkAsync would call it's own await for e.g. waiting on an I/O operation, would the...
Frequency table for a single variable
... classes,
Here I excessive values for employrate variable, and there's no meaning of it's frequency distribution with direct values_count(normalize=True)
country employrate alcconsumption
0 Afghanistan 55.700001 .03
1 Albania 11.000000 ...
Why can't non-default arguments follow default arguments?
...e :
firstly non-default argument should not follow default argument , it means you can't define (a=b,c) in function the order of defining parameter in function are :
positional parameter or non-default parameter i.e (a,b,c)
keyword parameter or default parameter i.e (a="b",r="j")
keywor...
How can I preview a merge in git?
...the head of what will be merged. Note the three dots, which have a special meaning compared to two dots (see below).
gitk ...otherbranchgraphical representation of the branches since they were merged last time.
Empty string implies HEAD, so that's why just ..otherbranch instead of HEAD..otherbranc...
How to set selected value of jquery select2?
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To dynamically set the "selected" value of a Select2 component:
$('#inputID').select2('data', {id: 100, a_key: 'Lorem Ipsum'});
Where the second parameter is an object with expected values.
UPDATE:
This does work, just wanted to note that in the new select2, "a_key" is "text" in a standard sel...
Why do you need to invoke an anonymous function on the same line?
...you don't give an identifier, you create an anonymous function. It doesn't mean that you can't specify an identifier.
This means following is valid.
var sum = function mySum(a, b) { return a + b; }
Important point to note is that you can use 'mySum' only inside the mySum function body, not outsi...
How do you return the column names of a table?
...mes of a table using SQL Server 2008? i.e. a table contains these columns- id, name, address, country and I want to return these as data.
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