MQL4参考 字符串函数

String Functions

This is a group of functions intended for working with data of the string type.

Function	Action
StringAdd	Adds a string to the end of another string
StringBufferLen	Returns the size of buffer allocated for the string
StringCompare	Compares two strings and returns 1 if the first string is greater than the second; 0 - if the strings are equal; -1 (minus 1) - if the first string is less than the second one
StringConcatenate	Forms a string of parameters passed
StringFill	Fills out a specified string by selected symbols
StringFind	Search for a substring in a string
StringGetCharacter	Returns the value of a number located in the specified string position
StringInit	Initializes string by specified symbols and provides the specified string length
StringLen	Returns the number of symbols in a string
StringReplace	Replaces all the found substrings of a string by a set sequence of symbols
StringSetCharacter	Returns a copy of a string with a changed value of a symbol in a specified position
StringSplit	Gets substrings by a specified separator from the specified string, returns the number of substrings obtained
StringSubstr	Extracts a substring from a text string starting from a specified position
StringToLower	Transforms all symbols of a selected string to lowercase
StringToUpper	Transforms all symbols of a selected string into capitals
StringTrimLeft	Cuts line feed characters, spaces and tabs in the left part of the string
StringTrimRight	Cuts line feed characters, spaces and tabs in the right part of the string
StringGetChar	Returns character (code) from the specified position in the string
StringSetChar	Returns the string copy with changed character in the specified position

MathIsValidNumberStringAdd