Difference between revisions of "Programmer Guide/Command Reference/STRCHR"

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;<var>needle</var>
 
;<var>needle</var>
 
:A string of characters, or a single character, to search for.
 
:A string of characters, or a single character, to search for.
;<var>variable</var>
+
;<var>haystackvariable</var>
:Find the first semi-colon in the string stored in the variable <var>variable</var>.
+
:Find the first semi-colon in the string stored in the variable <var>haystackvariable</var>.
  
 
  #v := set 'You must be joking ;-)'
 
  #v := set 'You must be joking ;-)'
 
  #i := strchr /v [[XXX|/-]] ';' '#v'
 
  #i := strchr /v [[XXX|/-]] ';' '#v'
 
  // #i == 19
 
  // #i == 19

Revision as of 18:54, 29 April 2014

var := STRCHR [ /Reverse ] [ /Silent ] /- needle haystackstring
var := STRCHR [ /Reverse ] [ /Silent] /Variable /- needle haystackvariable

Locates the first occurrence of the character character, or one of the characters in characters in the string haystackstring or, if /Variable is supplied, in the variable haystackvariable. and returns the index of the first occurrence, or -1, if no occurrence is found.

/Reverse
If option /Reverse is supplied, the haystack will be searched from right to left; otherwise, it will be searched from left to right.
/Silent
If option /Silent is set, warnings instead of errors will be generated on failure
/Variable
This option tells STx that the haystack argument is the name of a variable whose contents are to be searched. When omitting /Variable, the haystack argument will be considered a string literal to search.
/-
The "end of options" option tells STx that any further arguments are plain arguments, even should they start with a slash. You should always use this option in order to prevent - unless, of course, if you can be entirely sure that none of your arguments will start with a slash.
needle
A string of characters, or a single character, to search for.
haystackvariable
Find the first semi-colon in the string stored in the variable haystackvariable.
#v := set 'You must be joking ;-)'
#i := strchr /v /- ';' '#v'
// #i == 19