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Convert string to double-sized floating point value
Source position: syshelph.inc line 94
public class function TStringHelper.ToDouble(  | 
const S: string  | 
):Double; overload;  | 
ToDouble returns the contents of the string S as a Double-sized floating point value (if possible). It uses StrToFloat to convert the value to a floating point value.
If the string contains a value that cannot be translated to a floating point value, an EConvertError exception may be raised.
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Convert a string to a floating-point value.  | 
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Conversion error.  | 
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Convert string to boolean  | 
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Convert string to extended-sized floating point value  | 
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Convert string to 64-bit signed integer  | 
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Convert string to 32-bit signed integer  | 
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Convert string to single-sized floating point value  |