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Remove all special characters, punctuation and spaces from string
...; string = "Special $#! characters spaces 888323"
>>> ''.join(e for e in string if e.isalnum())
'Specialcharactersspaces888323'
You can use str.isalnum:
S.isalnum() -> bool
Return True if all characters in S are alphanumeric
and there is at least one character in S, False otherwis...
How can I count occurrences with groupBy?
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I think you're just looking for the overload which takes another Collector to specify what to do with each group... and then Collectors.counting() to do the counting:
import java.util.*;
import java.util.stream.*;
class Test {
public static void m...
How can I format my grep output to show line numbers at the end of the line, and also the hit count?
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-n returns line number.
-i is for ignore-case. Only to be used if case matching is not necessary
$ grep -in null myfile.txt
2:example two null,
4:example four null,
Combine with awk to print out the line number after the match:
$ grep -in null myfile...
Wildcards in jQuery selectors
...ed with respect to the two and so your able to use the attribute selectors for (at least some) properties.
– johntrepreneur
May 10 '13 at 21:14
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Find substring in the string in TWIG
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Just searched for the docs, and found this:
Containment Operator:
The in operator performs containment test.
It returns true if the left operand is contained in the right:
{# returns true #}
{{ 1 in [1, 2, 3] }}
{{ 'cd' in 'abcde' }}
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How to safely call an async method in C# without await
... thread other than the "main" thread. This means you don't have to "wait" for the call to MyAsyncMethod() from the thread that calls MyAsyncMethod; but, still allows you to do something with an exception--but only if an exception occurs.
Update:
technically, you could do something similar with awa...
How to capture UIView to UIImage without loss of quality on retina display
My code works fine for normal devices but creates blurry images on retina devices.
17 Answers
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How to send FormData objects with Ajax-requests in jQuery? [duplicate]
The XMLHttpRequest Level 2 standard (still a working draft) defines the FormData interface. This interface enables appending File objects to XHR-requests (Ajax-requests).
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How does this milw0rm heap spraying exploit work?
I usually do not have difficulty to read JavaScript code but for this one I can’t figure out the logic. The code is from an exploit that has been published 4 days ago. You can find it at milw0rm .
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Parsing domain from a URL
...com or www.google.co.uk, it will return the host as well. Any suggestions for that?
– Gavin M. Roy
Dec 30 '08 at 0:40
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