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MySQL: Set user variable from result of query
...ame} and this '{variable_name}', we can replace it with our variable name.
Now, how to assign a value in a variable in mysql. For this we have many ways to do that
Using keyword 'SET'.
Example :-
mysql > SET @a = 1;
Without using keyword 'SET' and using ':='.
Example:-
mysql > @a:=1;
B...
Why does the JVM still not support tail-call optimization?
...ementation and MLVM has listed the feature as "proto 80%" for some time now.
4 Answers
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Exception thrown inside catch block - will it be caught again?
...em like a programming 101 question and I had thought I knew the answer but now find myself needing to double check. In this piece of code below, will the exception thrown in the first catch block then be caught by the general Exception catch block below?
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Correct way of using JQuery-Mobile/Phonegap together?
...en't included using the <script> tag.
– Chris Snow
Feb 21 '15 at 11:05
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How to concatenate items in a list to a single string?
...
It's very useful for beginners to know
why join is a string method.
It's very strange at the beginning, but very useful after this.
The result of join is always a string, but the object to be joined can be of many types (generators, list, tuples, etc).
.jo...
`ui-router` $stateParams vs. $state.params
...o the params received into the url, then use $stateParams. If you want to know something more complex about the state itself, use $state.
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Where is HttpContent.ReadAsAsync?
....Formatting NuGet package page, the System.Net.Http.Formatting package is now legacy and can instead be found in the Microsoft.AspNet.WebApi.Client package available on NuGet here.
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Insert new item in array on any position in PHP
...( $original, 3, 0, $inserted ); // splice in at position 3
// $original is now a b c x d e
If replacement is just one element it is not necessary to put array() around it, unless the element is an array itself, an object or NULL.
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Reusing output from last command in Bash
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f() { bash -c "$BASH_COMMAND" >& /tmp/out.log; }
trap 'f' DEBUG
Now most recently executed command's stdout and stderr will be available in /tmp/out.log
Only downside is that it will execute a command twice: once to redirect output and error to /tmp/out.log and once normally. Probably th...
Converting an array of objects to ActiveRecord::Relation
...e def self.subjects variety, scopes, etc) on this array. The only way I know to run class methods on a group of objects is to have them be an ActiveRecord::Relation. So I end up resorting to adding a to_indicators method to Array .
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