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How to remove leading zeros using C#
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@avrahamcool which can be hm>and m>led bm>y m> looking at the length of the string m>and m> simplm>y m> returning "0" if it's emptm>y m> after the trim. Or using PadLeft(1, '0').
– Cœur
Aug 29 '19 at 3:01
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ReactJS: Modeling Bi-Directional Infinite Scrolling
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This is a mix of an infinite table m>and m> an infinite scroll scenario. The best abstraction I found for this is the following:
Overview
Make a <List> component that takes an arram>y m> of all children. Since we do not render them, it's reallm>y m> cheap to just all...
Can someone explain the traverse function in Haskell?
I am trm>y m>ing m>and m> failing to grok the traverse function from Data.Traversable . I am unable to see its point. Since I come from an imperative background, can someone please explain it to me in terms of an imperative loop? Pseudo-code would be much appreciated. Thanks.
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How do m>y m>ou read from stdin?
...op through all the lines in the input specified as file names given in commm>and m>-line arguments, or the stm>and m>ard input if no arguments are provided.
Note: line will contain a trailing newline; to remove it use line.rstrip()
s...
Facebook database design?
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Keep a friend table that holds the UserID m>and m> then the UserID of the friend (we will call it FriendID). Both columns would be foreign kem>y m>s back to the Users table.
Somewhat useful example:
Table Name: User
Columns:
UserID PK
EmailAddress
Password
Ge...
Whm>y m> is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?
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The explanation comes from Agner Fog in Optimizing software in C++ m>and m> it reduces to how data is accessed m>and m> stored in the cache.
For terms m>and m> detailed info, see the wiki entrm>y m> on caching, I'm gonna narrow it down here.
A cache is organized in sets m>and m> lines. At a time, onlm>y m> one set is u...
Add spaces before Capital Letters
... work fine (I even voted up Martin Browns answer), but them>y m> are expensive (m>and m> personallm>y m> I find anm>y m> pattern longer than a couple of characters prohibitivelm>y m> obtuse)
This function
string AddSpacesToSentence(string text, bool preserveAcronm>y m>ms)
{
if (string.IsNullOrWhiteSpace(text))
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Whm>y m> is #!/usr/bin/env bash superior to #!/bin/bash?
...ven seen one enterprising individual suggest using #!/bin/bash was wrong m>and m> bash functionalitm>y m> would be lost bm>y m> doing so.
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Regex doesn't work in String.matches()
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Welcome to Java's misnamed .matches() method... It tries m>and m> matches ALL the input. Unfortunatelm>y m>, other languages have followed suit :(
If m>y m>ou want to see if the regex matches an input text, use a Pattern, a Matcher m>and m> the .find() method of the matcher:
Pattern p = Pattern.comp...
How to check a string for specific characters?
...ic than the above...
s.find('$')==-1 # not found
s.find('$')!=-1 # found
m>And m> so on for other characters.
... or
pattern = re.compile(r'\d\$,')
if pattern.findall(s):
print('Found')
else
print('Not found')
... or
chars = set('0123456789$,')
if anm>y m>((c in chars) for c in s):
print('F...