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Repeat String - Javascript
...is old and and not terribly practical - it's just "clever" because it uses Array stuff to get
String things done. When I wrote "less process" I definitely meant
"less code" because, as others have noted in subsequent answers, it
performs like a pig. So don't use it if speed matters to you.
I...
How to store a command in a variable in a shell script?
...t a command in a variable, but the complex cases always fail.
Put it in an array and expand all the words with double-quotes "${arr[@]}" to not let the IFS split the words due to Word Splitting.
cmdArgs=()
cmdArgs=('date' '+%H:%M:%S')
and see the contents of the array inside. The declare -p allows ...
Can we write our own iterator in Java?
...ce Iterable and override the method iterator().
Here's an example of a an ArrayList like class implementing the interface, in which you override the method Iterator().
import java.util.Iterator;
public class SOList<Type> implements Iterable<Type> {
private Type[] arrayList;
p...
Convert tuple to list and back
...amylak)
tuple(itertools.imap(tuple, edited))
You can also use a numpy array:
>>> a = numpy.array(level1)
>>> a
array([[1, 1, 1, 1, 1, 1],
[1, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 1],
[1, 1, 1, 1, 1, 1]])
...
get list from pandas dataframe column
...t;class 'list'>
col_one_arr:
[ 1. 2. 3. nan]
type:<class 'numpy.ndarray'>
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Performance of Find() vs. FirstOrDefault() [duplicate]
...his._items[index];
}
return default (T);
}
So it's iterating over an array of items which makes sense, since a list is a wrapper on an array.
However, FirstOrDefault, on the Enumerable class, uses foreach to iterate the items. This uses an iterator to the list and move next. I think what you...
How to make ng-repeat filter out duplicate results
...n the collection and which field
// should be unique
// We assume an array of objects here
// NOTE: We are skipping any object which
// contains a duplicated value for that
// particular key. Make sure this is what
// you want!
return function (arr, targetField) {
var val...
Multiple inputs with same name through POST in php
... a form and get it processed
by the server simply by looping through the array of items with the
name "xyz".
Note that this is probably the wrong solution. Obviously, it depends on the data you are sending.
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How to concatenate string variables in Bash
...tring, but also an integer
echo $a
24
((a+=12))
echo $a
36
Append to an array var+=(...)
Our a is also an array of only one element.
echo ${a[@]}
36
a+=(18)
echo ${a[@]}
36 18
echo ${a[0]}
36
echo ${a[1]}
18
Note that between parentheses, there is a space separated array. If you want to sto...
Why can't Python parse this JSON data?
... valid JSON format. You have [] when you should have {}:
[] are for JSON arrays, which are called list in Python
{} are for JSON objects, which are called dict in Python
Here's how your JSON file should look:
{
"maps": [
{
"id": "blabla",
"iscategorical": "0"...