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LEFT OUTER joins in Rails 3
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@posts = Post.joins("LEFT OUTER JOIN users ON users.id = posts.user_id").
joins(:blog).select
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performSelector may cause a leak because its selector is unknown
...ring(@"someMethod");
IMP imp = [_controller methodForSelector:selector];
void (*func)(id, SEL) = (void *)imp;
func(_controller, selector);
Or more tersely (though hard to read & without the guard):
SEL selector = NSSelectorFromString(@"someMethod");
((void (*)(id, SEL))[_controller methodForS...
Proper way to return JSON using node or Express
...": "sqswqswqs",
"timestamp": "2019-11-29T12:46:21.633Z",
"_id": "5de1131d8f7be5395080f7b9",
"name": "topics test xqxq",
"thumbnail": "waterfall-or-agile-inforgraphics-thumbnail-1575031579309.jpg",
"category_id": "5de0fe0b4f76c22ebce2b70a",
"__v": 0
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Selecting element by data attribute
...e? For example, select all anchors that has data attribute named customerID which has value of 22 .
11 Answers
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2 column div layout: right column with fixed width, left fluid
...olumn needs to come before the left one.
If the right has a float (and a width), and if the left column doesn't have a width and no float, it will be flexible :)
Also apply an overflow: hidden and some height (can be auto) to the outer div, so that it surrounds both inner divs.
Finally, at the le...
How do I drop a function if it already exists?
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IF EXISTS (
SELECT * FROM sysobjects WHERE id = object_id(N'function_name')
AND xtype IN (N'FN', N'IF', N'TF')
)
DROP FUNCTION function_name
GO
If you want to avoid the sys* tables, you could instead do (from here in example A):
IF object_id(N'function_nam...
How to link to a named anchor in Multimarkdown?
...er to it on the same page by [link text](#abcd).
(This uses name= and not id=, for reasons explained in this answer.)
Remote references can use [link text](http://...#abcd) of course.
This works like a dream, provided you have control over the source and target texts. The anchor can even appear i...
CSS – why doesn’t percentage height work? [duplicate]
... percentage value for height doesn’t work but a percentage value for width does?
6 Answers
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Permission denied (publickey) when deploying heroku code. fatal: The remote end hung up unexpectedly
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You have to upload your public key to Heroku:
heroku keys:add ~/.ssh/id_rsa.pub
If you don't have a public key, Heroku will prompt you to add one automatically which works seamlessly. Just use:
heroku keys:add
To clear all your previous keys do :
heroku keys:clear
To display all your ...
How to turn a String into a JavaScript function call? [duplicate]
...settings.functionName];
if(typeof fn === 'function') {
fn(t.parentNode.id);
}
Edit: In reply to @Mahan's comment:
In this particular case, settings.functionName would be "clickedOnItem". This would, at runtime translate var fn = window[settings.functionName]; into var fn = window["clickedOnIte...