Basic operators
String operators
Operators used to perform string operations.
$concat
Concatenates strings together.
{ "$concat": ["string", "string", "..."] }
expry({ $concat: ["hello", " ", "world"] }); // "hello world"
$ltrim
Removes whitespace from the beginning of a string.
{ "$ltrim": "string" }
expry({ $ltrim: " hello " }); // "hello "
$rtrim
Removes whitespace from the end of a string.
{ "$rtrim": "string" }
expry({ $rtrim: " hello " }); // " hello"
$split
Divides a string into an array of substrings based on a delimiter.
{ "$split": ["string", "delimiter"] }
expry({ $split: ["June-15-2013", "-"] }); // ["June", "15", "2013"]
expry({ $split: ["hello world", " "] }); // ["hello", "world"]
$strLen
Returns the length of a string.
{ "$strLen": "string" }
expry({ $strLen: "hello" }); // 5
$substring
Returns a substring of a string.
{ "$substring": ["string", "start", "end"] }
expry({ $substring: ["hello", 0, 2] }); // "he"
expry({ $substring: ["hello", 1, 3] }); // "el"
$toLower
Converts a string to lowercase.
{ "$toLower": "string" }
expry({ $toLower: "Hello World" }); // "hello world"
$toUpper
Converts a string to uppercase.
{ "$toUpper": "string" }
expry({ $toUpper: "Hello World" }); // "HELLO WORLD"
$trim
Removes whitespace from the beginning and end of a string.
{ "$trim": "string" }
expry({ $trim: " hello " }); // "hello"