find: Difference between revisions

From Bohemia Interactive Community
Jump to navigation Jump to search
m (Fix SQF)
m (Text replacement - "// since Arma 3" to "// since {{arma3}}")
 
(One intermediate revision by the same user not shown)
Line 26: Line 26:
|gr2= Arrays
|gr2= Arrays


|descr= Searches for an array element within array or a ANSI string within a ANSI string.
|descr= Searches for an array element within an array or an ANSI string within an ANSI string.
{{Feature | Arma3| If Unicode support is desired, see [[forceUnicode]].}}
{{Feature|arma3|If Unicode support is desired, see [[forceUnicode]].}}
{{Feature | important | Search is cASe-seNsItiVE!}}
{{Feature|important|Search is cASe-seNsItiVE!}}


|s1= array [[find]] element
|s1= array [[find]] element


|p1= array: [[Array]] - Array to search in
|p1= array: [[Array]] - array to search in


|p2= element: [[Anything]] - Array element to find
|p2= element: [[Anything]] - array element to find


|r1= [[Number]] - Zero based position of the first array element that matches x, -1 if not found
|r1= [[Number]] - zero-based position of the first array element that matches x, -1 if not found


|s2= string [[find]] substring
|s2= string [[find]] substring
Line 42: Line 42:
|s2since= arma3 1.28
|s2since= arma3 1.28


|p21= string: [[String]] - String to search in
|p21= string: [[String]] - string to search in


|p22= substring: [[String]] - Substring to find
|p22= substring: [[String]] - substring to find


|r2= [[Number]] - Zero based position of the first sequence of characters that matches substring, -1 if not found
|r2= [[Number]] - zero-based position of the first sequence of characters that matches substring, -1 if not found


|s3= string [[find]] [substring, indexStart]
|s3= string [[find]] [substring, indexStart]
Line 52: Line 52:
|s3since= arma3 2.02
|s3since= arma3 2.02


|p41= string: [[String]] - String to search in
|p41= string: [[String]] - string to search in


|p42= substring: [[String]] - Substring to find
|p42= substring: [[String]] - substring to find


|p43= indexStart: [[Number]] - Zero based index which defines where find starts from
|p43= indexStart: [[Number]] - zero-based index which defines where find starts from


|r3= [[Number]] - Zero based position of the first sequence of characters that matches substring, -1 if not found
|r3= [[Number]] - zero-based position of the first sequence of characters that matches substring, -1 if not found


|x1= <sqf>["Apples", "Oranges", "Pears"] find "Oranges"; // returns 1</sqf>
|x1= <sqf>["Apples", "Oranges", "Pears"] find "Oranges"; // returns 1</sqf>


|x2= <sqf>[1, [2], [[3]]] find [[3]]; // returns 2 - does not work in OFP</sqf>
|x2= <sqf>[1, [2], [[3]]] find [[3]]; // returns 2 - does not work in OFP, returns -1</sqf>


|x3= <sqf>if (magazines player find "Strela" != -1) then { hint "You've got Strela!"; };</sqf>
|x3= <sqf>if (magazines player find "Strela" != -1) then { hint "You've got Strela!"; };</sqf>
Line 70: Line 70:
|x5= <sqf>"abc" find ""; // returns 0</sqf>
|x5= <sqf>"abc" find ""; // returns 0</sqf>


|x6= <sqf>"abcdefghijklmnopqrstuvxyz" find ["z", 20];</sqf>
|x6= <sqf>
"abcdefghijklmnopqrstuvxyz" find "z"; // returns 24
"abcdefghijklmnopqrstuvxyz" find ["z", 20]; // returns 24, better performance
</sqf>
 
|x7= <sqf>
"abcßdef" find "c" // 2
"abcßdef" find "ß" // 3
"abcßdef" find "d" // 5 - before forceUnicode
 
forceUnicode 0; // since {{arma3}} v2.02
"abcßdef" find "d" // 4
</sqf>


|seealso= [[in]] [[findIf]] [[forceUnicode]]
|seealso= [[in]] [[findIf]] [[forceUnicode]]
Line 80: Line 92:
|text= Using '''[[nil]]''' on either side of '''find''' will make the whole statement return [[Nothing]]:
|text= Using '''[[nil]]''' on either side of '''find''' will make the whole statement return [[Nothing]]:
<sqf>
<sqf>
_array = [1,2,nil,4,5];
_array = [1, 2, nil, 4, 5];
_result = _array find nil;
_result = _array find nil;
hintSilent str (isNil "_result"); // true
hintSilent str (isNil "_result"); // true
Line 87: Line 99:
hintSilent str (isNil "_result"); // true
hintSilent str (isNil "_result"); // true
</sqf>
</sqf>
}}
{{Note
|user= Kenoxite
|timestamp= 20150410170100
|text= [[find]] doesn't work with multidimensional arrays in OFP/CWA. It will always returns -1.
}}
{{Note
|user= BaerMitUmlaut
|timestamp= 20160517142100
|text= This command is unreliable/broken when it comes to some non-ASCII characters (as of Arma 3 1.58):
<sqf>
"abcßdef" find "c" // 2
"abcßdef" find "ß" // 3
"abcßdef" find "d" // 5
</sqf>
}}
{{Note
|user= Jtgibson
|timestamp= 20160707105600
|text= Not quite unreliable, just unexpected! Strings are tracked in terms of bytes rather than in actual character positions; all strings are stored in UTF-8 format.
In other words, the eszett character is in Unicode, which takes up two bytes rather than one as it is within the 128-255 range of Unicode (similar results would be expected for the division symbol, the umlaut, accented e's, etc).
Symbols that are particularly high in the Unicode range may take up three bytes, or even four for the truly exceptional characters, although Arma 3's default fonts are unlikely to render them.
This definitely complicates any script which assumes any printable character is a single byte, however, and unfortunately I'm not skilled enough with internationalisation to recommend any robust fix.
}}
}}


Line 120: Line 106:
|text= If you want to return all occurences of a given string in a string use the following code. Thanks to ''sharp.'' for providing the code.
|text= If you want to return all occurences of a given string in a string use the following code. Thanks to ''sharp.'' for providing the code.
<sqf>
<sqf>
private _fnc_findStringsInString =  
private _fnc_findStringsInString =
{
{
params ["_string", "_search"];
params ["_string", "_search"];
if (_string == "") exitWith {[]};
if (_string == "") exitWith { [] };
private _searchLength = count _search;
private _searchLength = count _search;
private _return = [];
private _return = [];
private _i = 0;
private _i = 0;
private _index = 0;
private _index = 0;
while {_index = _string find _search; _index != -1} do
while { _index = _string find _search; _index != -1 } do
{  
{
_string = _string select [_index + _searchLength];
_string = _string select [_index + _searchLength];
_i = _i + _index + _searchLength;
_i = _i + _index + _searchLength;
_return pushBack _i - _searchLength;
_return pushBack _i - _searchLength;
};
};
_return  
_return;
};
};
["Test,123,123,Test","Test"] call _fnc_findStringsInString; // returns [0,13]
["Test,123,123,Test", "Test"] call _fnc_findStringsInString; // returns [0, 13]
</sqf>
</sqf>
}}
}}

Latest revision as of 18:02, 18 November 2023

ofpe logo.png1.00Logo A0.png1.99Logo A1 black.png1.00Logo A2.png1.00A2 OA Logo.png1.50tkoh logo small.png1.00Arma 3 logo black.png0.50
Hover & click on the images for description

Description

Description:
Searches for an array element within an array or an ANSI string within an ANSI string.
Arma 3
If Unicode support is desired, see forceUnicode.
⚠
Search is cASe-seNsItiVE!
Groups:
StringsArrays

Syntax 1

Syntax:
array find element
Parameters:
array: Array - array to search in
element: Anything - array element to find
Return Value:
Number - zero-based position of the first array element that matches x, -1 if not found

Syntax 2

Syntax:
string find substring
Parameters:
string: String - string to search in
substring: String - substring to find
Return Value:
Number - zero-based position of the first sequence of characters that matches substring, -1 if not found

Syntax 3

Syntax:
string find [substring, indexStart]
Parameters:
string: String - string to search in
substring: String - substring to find
indexStart: Number - zero-based index which defines where find starts from
Return Value:
Number - zero-based position of the first sequence of characters that matches substring, -1 if not found

Examples

Example 1:
["Apples", "Oranges", "Pears"] find "Oranges"; // returns 1
Example 2:
[1, [2], [[3]]] find [[3]]; // returns 2 - does not work in OFP, returns -1
Example 3:
if (magazines player find "Strela" != -1) then { hint "You've got Strela!"; };
Example 4:
hint str ("japa is the man!" find "the man!"); // returns 8
Example 5:
"abc" find ""; // returns 0
Example 6:
"abcdefghijklmnopqrstuvxyz" find "z"; // returns 24 "abcdefghijklmnopqrstuvxyz" find ["z", 20]; // returns 24, better performance
Example 7:
"abcßdef" find "c" // 2 "abcßdef" find "ß" // 3 "abcßdef" find "d" // 5 - before forceUnicode forceUnicode 0; // since Arma 3 v2.02 "abcßdef" find "d" // 4

Additional Information

See also:
in findIf forceUnicode

Notes

Report bugs on the Feedback Tracker and/or discuss them on the Arma Discord or on the Forums.
Only post proven facts here! Add Note
Heeeere's Johnny! - c
Posted on Jan 04, 2015 - 09:38 (UTC)
Using nil on either side of find will make the whole statement return Nothing:
_array = [1, 2, nil, 4, 5]; _result = _array find nil; hintSilent str (isNil "_result"); // true _result = nil find 1; hintSilent str (isNil "_result"); // true
R3vo - c
Posted on Jul 16, 2020 - 07:33 (UTC)
If you want to return all occurences of a given string in a string use the following code. Thanks to sharp. for providing the code.
private _fnc_findStringsInString = { params ["_string", "_search"]; if (_string == "") exitWith { [] }; private _searchLength = count _search; private _return = []; private _i = 0; private _index = 0; while { _index = _string find _search; _index != -1 } do { _string = _string select [_index + _searchLength]; _i = _i + _index + _searchLength; _return pushBack _i - _searchLength; }; _return; }; ["Test,123,123,Test", "Test"] call _fnc_findStringsInString; // returns [0, 13]
Retrieved from "https://community.bistudio.com/wiki?title=find&oldid=349656"