parseNumber: Difference between revisions
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{{Command|Comments= | {{Command|Comments= | ||
| arma1 |Game name= | | arma1 |Game name= | ||
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|gr1= Strings |GROUP1= | |gr1= Strings |GROUP1= | ||
| An SQF equivalent of C++ [http://www.cplusplus.com/reference/cstdlib/atof/ atof] function. Parses the string, interpreting its content as a floating point number.<br><br> | | An SQF equivalent of C++ [http://www.cplusplus.com/reference/cstdlib/atof/ atof] function. Parses the string, interpreting its content as a floating point number.<br><br> | ||
The command first discards as many whitespace characters as necessary until the first non-whitespace character is found. Then, starting from this character, takes as many characters as possible that are valid following a syntax resembling that of [[Floating_Point_Number#Floating_Point_Literals|floating point literals]], and interprets them as a numerical value. The rest of the string after the last valid character is ignored and has no effect on the behavior of this command.<br><br> | The command first discards as many whitespace characters as necessary until the first non-whitespace character is found. Then, starting from this character, takes as many characters as possible that are valid following a syntax resembling that of [[Floating_Point_Number#Floating_Point_Literals|floating point literals]], and interprets them as a numerical value. The rest of the string after the last valid character is ignored and has no effect on the behavior of this command.<br><br> | ||
If the first sequence of non-whitespace characters in string does not form a valid floating-point number, or if no such sequence exists because either string is empty or contains only whitespace characters, no conversion is performed and the command returns 0. |DESCRIPTION= | If the first sequence of non-whitespace characters in string does not form a valid floating-point number, or if no such sequence exists because either string is empty or contains only whitespace characters, no conversion is performed and the command returns 0. |DESCRIPTION= | ||
| [[parseNumber]] string |SYNTAX= | | [[parseNumber]] string |SYNTAX= | ||
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|r2= [[Number]] - 0 if [[false]], 1 if [[true]] |RETURNVALUE2= | |r2= [[Number]] - 0 if [[false]], 1 if [[true]] |RETURNVALUE2= | ||
|x1= <code>_number = [[parseNumber]] "0.125"; {{cc|0.125}}</code> |EXAMPLE1= | |x1= <code>_number = [[parseNumber]] "0.125"; {{cc|0.125}}</code> |EXAMPLE1= | ||
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|x4= <code>_number = [[parseNumber]] [[true]]; {{cc|1}}</code> |EXAMPLE4= | |x4= <code>_number = [[parseNumber]] [[true]]; {{cc|1}}</code> |EXAMPLE4= | ||
| [[BIS_fnc_parseNumber]] |SEEALSO= | | [[BIS_fnc_parseNumber]] |SEEALSO= | ||
Revision as of 02:22, 17 January 2021
Description
- Description:
- An SQF equivalent of C++ atof function. Parses the string, interpreting its content as a floating point number.
The command first discards as many whitespace characters as necessary until the first non-whitespace character is found. Then, starting from this character, takes as many characters as possible that are valid following a syntax resembling that of floating point literals, and interprets them as a numerical value. The rest of the string after the last valid character is ignored and has no effect on the behavior of this command.
If the first sequence of non-whitespace characters in string does not form a valid floating-point number, or if no such sequence exists because either string is empty or contains only whitespace characters, no conversion is performed and the command returns 0. - Groups:
- Strings
Syntax
- Syntax:
- parseNumber string
- Parameters:
- string: String
- Return Value:
- Number
Alternative Syntax
- Syntax:
- parseNumber boolean Template:Since
- Parameters:
- boolean: Boolean
- Return Value:
- Number - 0 if false, 1 if true
Examples
- Example 1:
_number = parseNumber "0.125"; // 0.125- Example 2:
_number = parseNumber "0050"; // 50- Example 3:
_number = parseNumber "2 abc"; // 2- Example 4:
_number = parseNumber true; // 1
Additional Information
- See also:
- BIS_fnc_parseNumber
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
Notes
- Posted on Aug 28, 2014
- ffur2007slx2_5
- (A3 1.26)It only detects the first occurrence of a number in the string, return 0 by default.
parseNumber "2s4f"; // 2 parseNumber "s2f4"; // 0parse config or code, currently BIS_fnc_parseNumber, occurrence is only limited with number, return -1 by default.{s3s4f} call BIS_fnc_parseNumber; // -1