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The escaping character is the dollar sign, and it can escape another dollar, or a forward slash.

Linked Hash Map Here, we used numbers as keys, as numbers can unambiguously be recognized as numbers, so Groovy will not create a string key like in our previous examples.

But consider the case you want to pass a variable in lieu of the key, to have the value of that variable become the key: You can also pass quoted strings as well as keys: ["name": "Guillaume"].

Plain Java strings are immutable, whereas the resulting String representation of a GString can vary, depending on its interpolated values.

Even for the same resulting string, GStrings and Strings don’t have the same hash Code.

def name = "Guillaume" def date = "April, 1st" def dollar Slashy = $/ Hello $name, today we're $.

$ dollar sign $$ escaped dollar sign \ backslash / forward slash $/ escaped forward slash $$$/ escaped opening dollar slashy $/$$ escaped closing dollar slashy /$ assert [ 'Guillaume', 'April, 1st', '$ dollar sign', '$ escaped dollar sign', '\ backslash', '/ forward slash', '/ escaped forward slash', '$/ escaped opening dollar slashy', '/$ escaped closing dollar slashy' ].every def a = 1 assert a instanceof Integer // Integer.

Maps associate keys to values, separating keys and values with colons, and each key/value pairs with commas, and the whole keys and values surrounded by square brackets.

def colors = [red: '#FF0000', green: '#00FF00', blue: '#0000FF'] (1) assert colors['red'] == '#FF0000' (2) assert == '#00FF00' (3) colors['pink'] = '#FF00FF' (4) colors.yellow = '#FFFF00' (5) assert == '#FF00FF' assert colors['yellow'] == '#FFFF00' assert colors instanceof

MIN_VALUE def nd = -9223372036854775808 assert nd instanceof Long // Long.

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