Comparison of programming languages (string functions): Difference between revisions

Revision as of 18:38, 17 May 2019

Revision as of 19:23, 24 October 2019

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|-

| <code>substr(''string'', ''i'', 1)</code> <br /> <code>''string.substr(''i'', 1)</code>

|[[PerlRaku 6(programming language)||Raku]]<ref name="at2"/>

|0

|-

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# Example in Perl 5

substr("Hello, World", 1, 1); # 'e'

</syntaxhighlight>

<syntaxhighlight lang="perl6">

# Example in Perl 6

"Hello, World".substr(1, 1); # 'e'

</syntaxhighlight>

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"Hello, World"[2] # 'l'

"Hello, World"[-3] # 'r'

</syntaxhighlight>

<syntaxhighlight lang="perl6">

# Example in Perl 6Raku

"Hello, World".substr(1, 1); # 'e'

</syntaxhighlight>

Line 261:

|-

| <code>''string₁'' cmp ''string₂''</code>

|[[Perl 5]] /, [[PerlRaku (programming 6language)|Raku]]

|-

| <code>''string₁'' compare: ''string₂''</code>

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# Example in Perl 5

"hello" cmp "world"; # returns -1

</syntaxhighlight>

<syntaxhighlight lang="python">

# Example in Python

cmp("hello", "world") # returns -1

</syntaxhighlight>

<syntaxhighlight lang="perl6">

# Examples in Perl 6Raku

"hello" cmp "world"; # returns Less

"world" cmp "hello"; # returns More

"hello" cmp "hello"; # returns Same

</syntaxhighlight>

<syntaxhighlight lang="python">

# Example in Python

cmp("hello", "world") # returns -1

</syntaxhighlight>

Line 404:

|-

| <code>''string₁'' OP ''string₂''</code>, where <code>OP</code> can be any of <code>''eq'', ''ne'', ''lt'', ''gt'', ''le''</code> and <code>''ge''</code>

|[[Perl 5]], / [[Raku Perl(programming 6language)|Raku]]

|-

| <code>''string₁'' OP ''string₂''</code>, where <code>OP</code> can be any of <code>==, !=, <, >, <=</code> and <code>>=</code>

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<syntaxhighlight lang="perl6">

# Example in Perl 6Raku

"art" gt "painting"; # returns False

"art" lt "painting"; # returns True

Line 483:

|-

| <code>''string₁'' ~ ''string₂''</code>

|[[D (programming language)|D]], [[PerlRaku 6(programming language)|Raku]]

|-

| <code>(string-append ''string₁'' ''string₂'')</code>

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<syntaxhighlight lang="perl6">

# Example in Perl 6Raku

"abc" ~ "def"; # returns "abcdef"

"Perl " ~ 6; # returns "Perl 6Raku"

</syntaxhighlight>

<!-- endsection -->

Line 599:

|-

| <code>''string''.contains(''substring'')</code>

| [[Cobra (programming language)|Cobra]], [[Java (programming language)|Java]] (1.5+), [[PerlRaku 6(programming language)|Raku]]

|-

| <code>''string''.indexOf(''substring'') &gt;= 0</code>

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</syntaxhighlight>

<syntaxhighlight lang="perl6">

# Example in Perl 6

"Good morning!".contains('z') # returns False

"¡Buenos días!".contains('í'); # returns True

</syntaxhighlight>

<syntaxhighlight lang="python">

# Example in Python

"e" in "Hello mate" # returns true

"z" in "word" # returns false

</syntaxhighlight>

<syntaxhighlight lang="perl6">

# Example in Perl 6Raku

"Good morning!".contains('z') # returns False

"¡Buenos días!".contains('í'); # returns True

</syntaxhighlight>

Line 723:

|-

| <code>''string₁'' eq ''string₂''</code>

|[[Perl 5]] /, [[PerlRaku (programming 6language)|Raku]]

|-

| <code>''string₁''.equals(''string₂'')</code>

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<syntaxhighlight lang="perl6">

# Examples in Perl 6Raku

'hello' eq 'world' # returns False

'hello' eq 'hello' # returns True

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|-

| <code>index(''string'',''substring''«,''startpos''»)</code> <br /> <code>''string''.index(''substring'',«,''startpos''»)</code>

|[[Raku (programming language)|Raku]]

|[[Perl 6]]

|returns Nil

|-

Line 958:

<syntaxhighlight lang="perl6">

# Examples in Perl 6Raku

"Hello, there!".index('e') # returns 1

"Hello, there!".index('z') # returns Nil

Line 1,127:

|-

| <code>[[sprintf]](''formatstring'', ''items'')</code>

|[[Perl 5]], [[Perl 6PHP]], [[PHPRaku (programming language)|Raku]], [[Ruby (programming language)|Ruby]]

|C

|-

| <code>item.fmt(''formatstring'')</code>

|[[Raku (programming language)|Raku]]

|[[Perl 6]]

|C

|-

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<syntaxhighlight lang="perl6">

# Examples in Perl 6Raku

sprintf "My %s costs \$%.2f", "pen", 19.99; # returns "My pen costs $19.99"

1.fmt("%04d"); # returns "0001"

Line 1,294:

|-

| <code>''string₁'' ne ''string₂''</code>

|[[Perl 5]] /, [[PerlRaku (programming 6language)|Raku]]

|-

| <code>(string<> ''string₁'' ''string₂'')</code>

Line 1,354:

<syntaxhighlight lang="perl6">

# Example in Perl 6Raku

'hello' ne 'world' # returns True

</syntaxhighlight>

Line 1,399:

|-

| <code>join(''separator'', ''list_of_strings'')</code>

|[[Perl 5]], [[Perl 6PHP]], [[PHPRaku (programming language)|Raku]]

|-

| <code>implode(''separator'', ''array_of_strings'')</code>

Line 1,408:

|-

| <code>''array_of_strings''.join(''separator'')</code>

|[[Ruby (programming language)|Ruby]], [[JavaScript]], [[PerlRaku 6(programming language)|Raku]]

|-

| <code>(string-join ''array_of_strings'' ''separator'')</code>

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<syntaxhighlight lang="perl6">

# Example in Perl 6Raku

<a b c>.join('-'); # 'a-b-c'

</syntaxhighlight>

Line 1,524:

|-

| <code>substr(''string'', 0, ''n'')</code>

|[[AWK]] (changes string), [[Perl 5]], [[Perl 6PHP]], [[PHPRaku (programming language)|Raku]]

|-

| <code>LEFT$(''string'',''n'')</code>

Line 1,536:

|-

| <code>''string''.substr(0,''n'')</code>

|[[C++]] (STL), [[PerlRaku 6(programming language)|Raku]]

|-

| <code>[''string'' substringToIndex:''n'']</code>

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<syntaxhighlight lang="perl6">

# Example in Perl 6Raku

"Hello, there!".substr(0, 6); # returns "Hello,"

</syntaxhighlight>

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| <code>chars(''string'')</code> <br /> <code>''string''.chars</code>

|Number of graphemes (NFG)

|[[Raku (programming language)|Raku]]

|[[Perl 6]]

|-

| <code>codes(''string'')</code> <br /> <code>''string''.codes</code>

|Number of Unicode code points

|[[Raku (programming language)|Raku]]

|[[Perl 6]]

|-

| <code>''string''.size OR ''string''.length</code>

Line 1,819:

<syntaxhighlight lang="perl6">

# Examples in Perl 6Raku

"🏳️‍🌈".chars; chars "🏳️‍🌈"; # both return 1

"🏳️‍🌈".codes; codes "🏳️‍🌈"; # both return 4

Line 1,872:

|-

| <code>lc(''string'')</code>

|[[Perl 5]] /, [[PerlRaku (programming 6language)|Raku]]

|-

| <code>''string''.lc</code>

|[[Raku (programming language)|Raku]]

|[[Perl 6]]

|-

|<code>tolower(''char'')</code>

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<syntaxhighlight lang="perl6">

# Example in Perl 6Raku

"Wiki means fast?".lc; # "wiki means fast?"

</syntaxhighlight>

Line 2,027:

|-

| <code>split ''separator'', ''string'', 2</code> <br /> <code>''string''.split( ''separator'', 2 )</code>

|[[Raku (programming language)|Raku]]

|[[Perl 6]]

|Separator does not have to be a regular expression

|}

Line 2,038:

<syntaxhighlight lang="perl">

# Examples in Perl 5 / Perl 6Raku

split /(spam)/, 'Spam eggs spam spam and ham' ,2; # ('Spam eggs ', 'spam', ' spam and ham');

split /(X)/, 'Spam eggs spam spam and ham' ,2; # ('Spam eggs spam spam and ham');

Line 2,095:

|-

| <code>''string''.subst(''find'', ''replace'', :g)</code>

|[[Raku (programming language)|Raku]]

|[[Perl 6]]

|-

| <code>''string''.replace(''find'', ''replace'', "g") <ref>third parameter is non-standard</ref> or<br /> ''string''.replace(/''find_regex''/g, ''replace'')<ref name="regex" /></code>

Line 2,150:

<syntaxhighlight lang="perl6">

// Examples in Perl 6Raku

"effffff".subst("f", "jump", :g); # returns "ejumpjumpjumpjumpjumpjump"

"blah".subst("z", "y", :g); # returns "blah"

Line 2,185:

|-

| <code>flip ''string''</code> <br /> <code>''string''.flip</code>

|[[Raku (programming language)|Raku]]

|[[Perl 6]]

|-

| <code>lists:reverse(''string'')</code>

Line 2,265:

<syntaxhighlight lang="perl6">

# Example in Perl 6Raku

"hello".flip # returns "olleh"

</syntaxhighlight>

Line 2,311:

|-

| <code>rindex(''string'',''substring''«,''startpos''»)</code> <br /> <code>''string''.rindex(''substring''«,''startpos''»)</code>

|[[Raku (programming language)|Raku]]

|[[Perl 6]]

|returns Nil

|-

Line 2,411:

<syntaxhighlight lang="perl6">

# Examples in Perl 6Raku

"Hello mate".rindex("e"); # returns 9

"Hello mate".rindex("e", 4); # returns 1

Line 2,473:

|-

| <code>substr(''string'',*-''n'')</code> <br /> <code>''string''.substr(*-''n'')</code>

|[[Raku (programming language)|Raku]]

|[[Perl 6]]

|-

| <code>''string''[-''n'':]</code>

Line 2,516:

<syntaxhighlight lang="perl6">

# Examples in Perl 6Raku

"abcde".substr(*-3); # returns "cde"

"abcde".substr(*-8); # 'out of range' error

Line 2,590:

|-

| <code>split(''separator'', ''string''«, ''limit''»)</code> <br /> <code>''string''.split(''separator'', «''limit''»)</code>

|[[Raku (programming language)|Raku]]

|[[Perl 6]]

|-

| <code>explode(''separator'', ''string''«, ''limit''»)</code>

Line 2,686:

<syntaxhighlight lang="perl6">

# Examples in Perl 6Raku

'Spam eggs spam spam and ham'.split(/spam/); # (Spam eggs and ham)

split(/X/, 'Spam eggs spam spam and ham'); # (Spam eggs spam spam and ham)

Line 2,743:

|-

| <code>substr(''string'', ''startpos'', ''numChars'')</code> <br /> <code>''string''.substr(''startpos'', ''numChars'')</code>

|[[PerlRaku 6(programming language)|Raku]]<ref name="substr5"/><ref name="substr6"/>

|-

| <code>substr(''string'', ''startpos'' «,''numChars'', ''padChar''»)</code>

Line 2,859:

<syntaxhighlight lang="perl6">

# Examples in Perl 6Raku

"abc".substr(1, 1); # returns "b"

"abc".substr(1); # returns "bc"

Line 2,904:

|-

| <code>uc(''string'')</code>

|[[Perl 5]] /, [[PerlRaku (programming 6language)|Raku]]

|-

| <code>''string''.uc</code>

|[[Raku (programming language)|Raku]]

|[[Perl 6]]

|-

|<code>toupper(''char'')</code>

Line 3,010:

<syntaxhighlight lang="perl6">

# Example in Perl 6Raku

uc("Wiki means fast?"); # "WIKI MEANS FAST?"

"Wiki means fast?".uc; # "WIKI MEANS FAST?"

Line 3,094:

|-

| <tt>''string''.trim</tt>

|[[Raku (programming language)|Raku]]

|[[Perl 6]]

|-

| <tt>trim(''string'')</tt>

|[[PHP]], [[PerlRaku 6(programming language)|Raku]]

|-

| <tt>[''string'' stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]</tt>

Line 3,250:

* <code>[http://perldoc.perl.org/functions/chomp.html chomp]</code> removes the trailing newline character(s) from a string if present. (What constitutes a newline is [http://perldoc.perl.org/perlvar.html $INPUT_RECORD_SEPARATOR] dependent).

In [[PerlRaku 6(programming language)|Raku]], the upcoming majorsister revisionlanguage of the languagePerl, strings have a <code>trim</code> method.

Example: