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git cherry-pick says “…38c74d is a merge but no -m option was given”
...ommit. You lose all their history, and glom together all their diffs. Your call.
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When to add what indexes in a table in Rails
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Should I add "index" to all the foreign keys like "xxx_id"?
It would be better, because it accelerates the search in sorting in this column. And Foreign keys are something searched for a lot.
Since Version 5 of rails the index will be created automatically, for more informatio...
Change Active Menu Item on Page Scroll?
...ll position
var fromTop = $(this).scrollTop()+topMenuHeight;
// Get id of current scroll item
var cur = scrollItems.map(function(){
if ($(this).offset().top < fromTop)
return this;
});
// Get the id of the current element
cur = cur[cur.length-1];
var id = cur &am...
?: operator (the 'Elvis operator') in PHP
...// true
var_dump('rock' ?: 'roll'); // 'rock'
?>
By the way, it's called the Elvis operator.
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Does a finally block run even if you throw a new Exception?
... JLS. The wording of the JLS is sometimes a bit strange, but you will typically find that the meaning of the strange terminology is defined clearly elsewhere in the document. The JLS is a specification and has precision (rather than readability) as its primary goal.
– Stephen...
Injecting $state (ui-router) into $http interceptor causes circular dependency
...ld be the same, you inject the $injector service into your interceptor and call $injector.get() where you need to get the $state service.
– Jonathan Palumbo
Dec 15 '14 at 19:58
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How do I create a foreign key in SQL Server?
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create table question_bank
(
question_id uniqueidentifier primary key,
question_exam_id uniqueidentifier not null,
question_text varchar(1024) not null,
question_point_value decimal,
constraint fk_questionbank_exams foreign key (question_exam_id) ...
Mysql error 1452 - Cannot add or update a child row: a foreign key constraint fails
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Quite likely your sourcecodes_tags table contains sourcecode_id values that no longer exists in your sourcecodes table. You have to get rid of those first.
Here's a query that can find those IDs:
SELECT DISTINCT sourcecode_id FROM
sourcecodes_tags tags LEFT JOIN sourcecodes sc ON...
import module from string variable
...rn instance
And everytime I want to reload a new instance I just have to call getInstance() like this:
myInstance = getInstance("MyModule", myParam1, myParam2, myParam3)
Finally I can call all the functions inside the new Instance:
myInstance.aFunction()
The only specificity here is to custo...
How do I add a Fragment to an Activity with a programmatically created content view
...han one problem with that code. A fragment cannot be declared that way, inside the same java file as the activity but not as a public inner class. The framework expects the fragment's constructor (with no parameters) to be public and visible. Moving the fragment into the Activity as an inner class, ...