CODEWITHSUNDEEP
autohotkey
user1720624
user1720624

Reputation:

Alter a specific character of a variable?

Is it possible to target a specific character in a variable in AutoHotkey? In this case I'd like to uppercase/lowercase the first character in the variable.

::foo::
InputBox, foo, Foo, Enter foo:
/*
Capitalize first character of %foo% here.
Do whatever.
*/
return

Upvotes: 0

Views: 208

Answers (2)

errorseven
errorseven

Reputation: 2672

Alternative one liner to @Blauhirn's solution:

MsgBox % foo := Format("{:U}",  SubStr(foo, 1,1)) . subStr(foo, 2, strLen(foo))

This can also be done in RegEx fairly simply.

::::::Edited::::::::::

Here's a full Example of it's use with the concatenate removed...

fu := "fu"
bar := "beyond all recognition!"
MsgBox % capitalize(fu) A_space capitalize(bar)
Return 

capitalize(x) {
return Format("{:U}",  SubStr(x, 1,1)) subStr(x, 2, strLen(x))
}

Regular Expression:

;This is the only example that accounts for Whitespace
var := "   regex is cool!"             
MsgBox % RegExReplace(var, "^(\s*)(.)", "$1$u2")

NumPut/DllCall: 

var := "autohotkey is awesome!"
NumPut(Asc(DllCall("CharUpperA", Str,Chr(NumGet( var,0,"UChar")),Str)), var,0,"UChar")
MsgBox % var

Upvotes: 2

phil294
phil294

Reputation: 10852

In your case, StringUpper will do:

stringUpper, foo, foo, T

T stands for:

the string will be converted to title case. For example, "GONE with the WIND" would become "Gone With The Wind". "

Other than that, you can always determine substrings using either StringTrimRight/Left or SubStr(), alter them and append them afterwards:

firstLetter     := subStr(foo, 1, 1)
stringUpper, firstLetter, firstLetter
remainingLetters := subStr(foo, 2, strLen(foo))
foo := firstLetter . remainingLetters
; or, equally:
; foo = %firstLetter%%remainingLetters%

Upvotes: 2

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