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MySQL - Rows to Columns
I tried to search posts, but I only found solutions for SQL Server/Access. I need a solution in MySQL (5.X).
12 Answers
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ASP.NET Identity DbContext confusion
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I would use a single Context class inheriting from IdentityDbContext.
This way you can have the context be aware of any relations between your classes and the IdentityUser and Roles of the IdentityDbContext.
There is very little overhead in the IdentityDbContext, it is basically a reg...
Why does direction of index matter in MongoDB?
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MongoDB concatenates the compound key in some way and uses it as the key in a BTree.
When finding single items - The order of the nodes in the tree is irrelevant.
If you are returning a range of nodes - The elements close to eac...
How to set timer in android?
...ok since this isn't cleared up yet there are 3 simple ways to handle this.
Below is an example showing all 3 and at the bottom is an example showing just the method I believe is preferable. Also remember to clean up your tasks in onPause, saving state if necessary.
import java.util.Timer;
import...
Javascript How to define multiple variables on a single line?
...line, I'm getting confused how to properly define multiple JavaScript variables on a single line.
7 Answers
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Why does ('0' ? 'a' : 'b') behave different than ('0' == true ? 'a' : 'b') [duplicate]
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First, for completeness:
('0' ? 'a' : 'b')
is 'a', because '0' is a non-empty string, which always evaluates to true:
String: The result is false if the argument is the empty String (its length is zero);
otherwise the result is true.
Now to '0' == tru...
How to generate a random string of a fixed length in Go?
I want a random string of characters only (uppercase or lowercase), no numbers, in Go. What is the fastest and simplest way to do this?
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C++ “virtual” keyword for functions in derived classes. Is it necessary?
With the struct definition given below...
9 Answers
9
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Convert javascript array to string
...ciative array, such code will work fine:
var value = { "aaa": "111", "bbb": "222", "ccc": "333" };
var blkstr = [];
$.each(value, function(idx2,val2) {
var str = idx2 + ":" + val2;
blkstr.push(str);
});
console.log(blkstr.join(", "));
<script src="https://ajax....
Creating an empty Pandas DataFrame, then filling it?
...m the pandas DataFrame docs here: http://pandas.pydata.org/pandas-docs/stable/dsintro.html
5 Answers
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