Regular expressions: Difference between revisions
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m (→{{header|AutoHotkey}}: Minor indentation and casing edit) |
(→{{header|Tcl}}: demonstrate substring extraction as well, and apply a bunch of corrections) |
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=={{header|Tcl}}== |
=={{header|Tcl}}== |
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Test using < |
Test using <code>regexp</code>: |
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<lang tcl>set theString "I am a string" |
<lang tcl>set theString "I am a string" |
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if {[regexp -- {string$} $theString]} { |
if {[regexp -- {string$} $theString]} { |
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puts "Ends with 'string' |
puts "Ends with 'string'" |
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} |
} |
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if {![regexp -- {^You} $theString]} { |
if {![regexp -- {^You} $theString]} { |
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puts "Does not start with 'You' |
puts "Does not start with 'You'" |
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}</lang> |
}</lang> |
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Extract substring using <code>regexp</code> |
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<lang tcl>set theString "This string has >123< a number in it" |
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if {[regexp -- {>(\d+)<} $theString -> number]} { |
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puts "Contains the number $number" |
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}</lang> |
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Substitute using <code>regsub</code> |
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<lang tcl>set theString = "I am a string" |
<lang tcl>set theString = "I am a string" |
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puts [regsub -- { +a +} $theString { another }]</lang> |
puts [regsub -- { +a +} $theString { another }]</lang> |
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