isNotNull 、isNotNull、isNotEmpty、isEmpty
2012-09-27 15:39
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isNotNull: Checks if a property is null.
isNotNull: Checks if a property is not null.
isNotEmpty: Checks to see if the value of a Collection, String or
String.valueOf()property is not null and not empty (“” or size() < 1).
isEmpty: Checks to see if the value of a Collection, String or
String.valueOf() property is null or empty (“” or size() < 1).
isNotNull: Checks if a property is not null.
isNotEmpty: Checks to see if the value of a Collection, String or
String.valueOf()property is not null and not empty (“” or size() < 1).
isEmpty: Checks to see if the value of a Collection, String or
String.valueOf() property is null or empty (“” or size() < 1).
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