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How to use Comparator in Java to sort
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Is XML case-sensitive?
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edited Oct 4 '17 at 15:26
Joe DF
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ans...
Formatting Phone Numbers in PHP
... SMS app and need to be able to convert the sender's phone number from +11234567890 to 123-456-7890 so it can be compared to records in a MySQL database .
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git: How to diff changed files versus previous versions after a pull?
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159
There are all kinds of wonderful ways to specify commits - see the specifying revisions sectio...
Java HashMap performance optimization / alternative
...around 20,000 codes for 26 million distinct objects. That is an average of 1,300 objects per hash bucket = very very bad. However if I turn the two arrays into a number in base 52 I am guaranteed to get a unique hash code for every object:
public int hashCode() {
// assume that both a an...
What is a “surrogate pair” in Java?
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131
The term "surrogate pair" refers to a means of encoding Unicode characters with high code-poin...
What is the difference between an expression and a statement in Python?
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Converting camel case to underscore case in ruby
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Hash collision in git
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111
Picking atoms on 10 Moons
An SHA-1 hash is a 40 hex character string... that's 4 bits per char...
Length of string in bash
...bytes len.\n" "${myvar}" $chrlen $bytlen
will render:
Généralités is 11 char len, but 14 bytes len.
you could even have a look at stored chars:
myvar='Généralités'
chrlen=${#myvar}
oLang=$LANG oLcAll=$LC_ALL
LANG=C LC_ALL=C
bytlen=${#myvar}
printf -v myreal "%q" "$myvar"
LANG=$oLang LC_A...