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How to find a table having a specific column in postgresql
...t c.relname
from pg_class as c
inner join pg_attribute as a on a.attrelid = c.oid
where a.attname = <column name> and c.relkind = 'r'
sql fiddle demo
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How to access the correct `this` inside a callback?
...rd inside each function and its value only depends on how the function was called, not how/when/where it was defined. It is not affected by lexical scopes like other variables (except for arrow functions, see below). Here are some examples:
function foo() {
console.log(this);
}
// normal functi...
Why can't I overload constructors in PHP?
...a is that by adding return $this; to the end of your methods you can chain calls together. So instead of
$car1 = new Car('blue', 'RWD');
$car2 = new Car('Ford', '300hp');
(which simply wouldn't work), you can do:
$car = (new Car)
->setColor('blue')
->setMake('Ford')
-...
What exactly does the “u” do? “git push -u origin master” vs “git push origin master”
...
In more simple terms:
Technically, the -u flag adds a tracking reference to the upstream server you are pushing to.
What is important here is that this lets you do a git pull without supplying any more arguments. For example, once you do a git push -u...
What characters are valid for JavaScript variable names?
...possibilities - working examples. If it doesn't work in all browsers, then call it a bug, cause it should.
var ᾩ = "something";
var ĦĔĽĻŎ = "hello";
var 〱〱〱〱 = "less than? wtf";
var जावास्क्रिप्ट = "javascript"; // ok that's JavaScript in hindi
var KingGeorg...
Is there an easy way to strike through text in an app widget?
I was wondering if there is an easy way to strike text within an app widget in Android. In a normal activity, it is pretty easy, using textview flags:
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Why are iframes considered dangerous and a security risk?
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As soon as you're displaying content from another domain, you're basically trusting that domain not to serve-up malware.
There's nothing wrong with iframes per se. If you control the content of the iframe, they're perfectly safe.
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How can I set the aspect ratio in matplotlib?
...itly controlled aspect ratio, but it seems to be ignored once an imshow is called.
Original Answer:
Here's an example of a routine that will adjust the subplot parameters so that you get the desired aspect ratio:
import matplotlib.pyplot as plt
def adjustFigAspect(fig,aspect=1):
'''
Adj...
CSS to make HTML page footer stay at bottom of the page with a minimum height, but not overlap the p
... Sometimes footers have dynamic content, or your building a framework. Any ideas for variable height footers?
– Costa
Jun 23 '14 at 16:31
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mysql - how many columns is too many?
...s to splitting up the table into several with fewer columns, which is also called Vertical Partitioning. Here are a few:
If you have tables with many rows, modifying the indexes can take a very long time, as MySQL needs to rebuild all of the indexes in the table. Having the indexes split over se...