@FunctionalInterface<\/a> An operation upon a single operand yielding a result. The operand and the result are of the same type. This is a specialization of \u30d1\u30e9\u30e1\u30fc\u30bf:<\/b><\/p>\n \u65e5\u4ed8:<\/b><\/p>\n 1.8 <\/p><\/blockquote>\n \u53c2\u7167:<\/b><\/p>\n \u305d\u3057\u3066\u4eca\u56de\u4f7f\u3046 DoubleUnaryOperator \u306f\u6b21\u306e\u3088\u3046\u306b double \u5c02\u7528\u306b\u7528\u610f\u3055\u308c\u305f\u3082\u306e\u3067\u3059\u3002<\/p>\n java.\u200butil.\u200bfunction<\/a><\/b><\/p>\n @FunctionalInterface<\/a> An operation on a \u65e5\u4ed8:<\/b><\/p>\n 1.8 <\/p><\/blockquote>\n \u53c2\u7167:<\/b><\/p>\n applyAsDouble(double operand) \u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u3063\u3066\u307e\u3059\u3002<\/p>\n java.\u200butil.\u200bfunction.\u200bDoubleUnaryOperator<\/a><\/b><\/p>\n public double applyAsDouble<\/b>(double operand)<\/tt><\/p>\n Returns the \u30d1\u30e9\u30e1\u30fc\u30bf:<\/b><\/p>\n \u623b\u308a\u5024:<\/b><\/p>\n the operation result value<\/p>\n<\/blockquote>\n <\/p>\n \u305d\u308c\u3067\u306f\u7121\u9650\u5c0f\u304b\u3089 1 \u3092\u5f15\u3044\u305f\u5024\u306e\u8868\u793a\u3068\u305d\u306e\u5024\u3068\u7121\u9650\u5c0f\u304c\u7b49\u3057\u3044\u304b\u78ba\u8a8d\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u5275\u3063\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n \u3064\u3044\u3067\u306b\u7121\u9650\u5c0f\u304b\u3089\u7121\u9650\u5c0f\u3092\u5f15\u3044\u3066\u307f\u307e\u3057\u305f\u3002\uff08\u666e\u901a\u3042\u308a\u3048\u306a\u3044\u8a08\u7b97\u3067\u3059\u3088\u306d(^_^;)<\/p>\n \u5b9f\u884c\u7d50\u679c\u306f\u6b21\u306e\u3088\u3046\u306b\u671f\u5f85\u901a\u308a\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n <\/p>\n -Infinity <\/p>\n \u3053\u3053\u3067\u30d0\u30b0\u304c\u3067\u305f\u3089\u7247\u8a00\u306e\u82f1\u8a9e\u3067\u300c\u306a\u3093\u3067\u3084\u306d\u3093\uff1f\u300d\u3068\u8a00\u3063\u3066\u3084\u308d\u3046\u3068\u601d\u3063\u305f\u304c\u3053\u3093\u306a\u5358\u7d14\u306a\u30d0\u30b0\u306f\u305d\u3046\u305d\u3046\u3042\u308b\u3082\u3093\u3058\u3083\u306a\u3044\u3067\u3059\u306d\u3002<\/p>\n <\/p>\n
public interface UnaryOperator<T><\/b> extends Function<\/a><T,T><\/tt><\/p>\nFunction<\/code> for the case where the operand and result are of the same type. <\/p>\nT<\/code> – the type of operand to apply<\/code> and of the result<\/p><\/blockquote>\n\n
Function<\/a><\/code><\/p>\n<\/blockquote>\n<\/code> <\/p>\n
public interface DoubleUnaryOperator<\/b><\/tt><\/p>\ndouble<\/code> operand yielding a double<\/code> result. This is the primitive type specialization of UnaryOperator<\/a><\/code> for double<\/code>. <\/p>\n\n
UnaryOperator<\/a><\/code><\/p>\n<\/blockquote>\ndouble<\/code> result of the operation upon the double<\/code> operand. <\/p>\noperand<\/code> – the operand value<\/p><\/blockquote>\n\n
\r\npackage jp.yucchi.tryintunaryoperator;\r\n\r\nimport java.util.function.DoubleUnaryOperator;\r\n\r\npublic class TryIntUnaryOperator {\r\n\r\n public static void main(String[] args) {\r\n \r\n DoubleUnaryOperator operator = f -> f - 1;\r\n double j = operator.applyAsDouble(Double.NEGATIVE_INFINITY);\r\n System.out.println(j);\r\n if(Double.NEGATIVE_INFINITY == j){\r\n System.out.println(\"\u7121\u9650\u5c0f\");\r\n }else{\r\n System.out.println(\"\u306a\u3093\u3067\u3084\u306d\u3093\u3002\");\r\n }\r\n \r\n \r\n DoubleUnaryOperator operator2 = f -> f - Double.NEGATIVE_INFINITY;\r\n double k = operator2.applyAsDouble(Double.NEGATIVE_INFINITY);\r\n System.out.println(k);\r\n if(0 == k){\r\n System.out.println(\"\uff10\");\r\n }else{\r\n System.out.println(\"\u3080\u308a\u307d\");\r\n }\r\n }\r\n}\r\n\r\n<\/pre>\n<\/p>\n
\u7121\u9650\u5c0f
NaN
\u3080\u308a\u307d<\/p>\n
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