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Replace a value if null or undefined in JavaScript
...
Here’s the JavaScript equivalent:
var i = null;
var j = i || 10; //j is now 10
Note that the logical operator || does not return a boolean value but the first value that can be converted to true.
Additionally use an array of objects instead of one single object:
var options = {
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What is the order of precedence for CSS?
... TylerH
18.1k1212 gold badges6161 silver badges8080 bronze badges
answered Aug 3 '14 at 14:49
Lorenz MeyerLorenz Meyer
16.7k20...
How to resize an image with OpenCV2.0 and Python2.6
I want to use OpenCV2.0 and Python2.6 to show resized images. I used and adopted this example but unfortunately, this code is for OpenCV2.1 and does not seem to be working on 2.0. Here my code:
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How to pass optional arguments to a method in C++?
...e of passing mode as optional parameter
void myfunc(int blah, int mode = 0)
{
if (mode == 0)
do_something();
else
do_something_else();
}
you can call myfunc in both ways and both are valid
myfunc(10); // Mode will be set to default 0
myfunc(10, 1); // Mode will be ...
Custom Python list sorting
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60
It's documented here.
The sort() method takes optional arguments for controlling the
comp...
Height equal to dynamic width (CSS fluid layout) [duplicate]
... |
edited Dec 5 '14 at 16:05
chridam
82.4k1818 gold badges159159 silver badges185185 bronze badges
answe...
Nullable type issue with ?: Conditional Operator
Could someone explain why this works in C#.NET 2.0:
5 Answers
5
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Get loop count inside a Python FOR loop
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605
The pythonic way is to use enumerate:
for idx,item in enumerate(list):
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How can I make pandas dataframe column headers all lowercase?
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180
You can do it like this:
data.columns = map(str.lower, data.columns)
or
data.columns = [x.lo...
Guards vs. if-then-else vs. cases in Haskell
...and guards should almost always be used instead.
let absOfN =
if n < 0 -- Single binary expression
then -n
else n
Every if..then..else expression can be replaced by a guard if it is at the top level of a function, and this should generally be preferred, since you can add more cases more...