History of Idiom 38 > diff from v23 to v24

Edit summary for version 24 by :

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Version 23

2015-09-28, 20:52:35

Version 24

2015-10-29, 14:05:13

Idiom #38 Extract a substring

Find substring t consisting in characters i (included) to j (excluded) of string s.
(character indexes start at 0 unless specified otherwise)

Idiom #38 Extract a substring

Find substring t consisting in characters i (included) to j (excluded) of string s.
(character indexes start at 0 unless specified otherwise)

Elixir

Elixir

Code

String.slice(string, i..j-1)

Code

String.slice(string, i..j-1)

Code

$t = mb_substr($s, $i, $j-$i, 'UTF-8');

Code

$t = mb_substr($s, $i, $j-$i, 'UTF-8');

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Requires multibyte (mb) extension for unicode support.

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Requires multibyte (mb) extension for unicode support.

Perl

Perl

Code

my $chunk = substr("now is the time", i, j);

Code

my $chunk = substr("now is the time", i, j);

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Perl is 0-based: i=3 would start at the 4th character.

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Perl is 0-based: i=3 would start at the 4th character.

Dart

Dart

Code

var t = s.substring(i, j);

Code

var t = s.substring(i, j);

Doc URL

https://api.dartlang.org/apidocs/channels/stable/dartdoc-viewer/dart-core.String#id_substring

Doc URL

https://api.dartlang.org/apidocs/channels/stable/dartdoc-viewer/dart-core.String#id_substring

Python

Python

Code

t = s[i:j]

Code

t = s[i:j]

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Slicing works on strings.

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Slicing works on strings.

Origin

http://stackoverflow.com/questions/663171/is-there-a-way-to-substring-a-string-in-python/663175#663175

Origin

http://stackoverflow.com/questions/663171/is-there-a-way-to-substring-a-string-in-python/663175#663175

Ruby

Ruby

Code

t = s[i..j-1]

Code

t = s[i..j-1]

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In ruby j is included by default
s = "test"
t = "s[0..1] => "te"

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In ruby j is included by default
s = "test"
t = "s[0..1] => "te"

Doc URL

http://www.ruby-doc.org/core-2.1.1/String.html#method-i-slice

Doc URL

http://www.ruby-doc.org/core-2.1.1/String.html#method-i-slice

Java

Java

Code

String t = s.substring(i,j);

Code

String t = s.substring(i,j);

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Throws IndexOutOfBoundsException if i is negative, or j is larger than the length s, or i is larger than j.

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Throws IndexOutOfBoundsException if i is negative, or j is larger than the length s, or i is larger than j.

Demo URL

http://ideone.com/R8U6Pv

Demo URL

http://ideone.com/R8U6Pv

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History of Idiom 38 > diff from v23 to v24

Version 23

Version 24

Idiom #38 Extract a substring

Idiom #38 Extract a substring

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