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External Data Source

Source

Regular Expression
[\+-]?([0-9]([0-9_]*[0-9])?|0[xX][0-9a-fA-F]([0-9a-fA-F_]*[0-9a-fA-F])?|0_*[0-7]([0-7_]*[0-7])?|0[bB][01]([01_]*[01])?)[lL]?