侯捷stl源码剖析注释之17sgi-stl-33-function

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1、SGISTL3.3stl_function.h完整列表/**Copyright(c)1994*Hewlett-PackardCompany**Permissiontouse,copy,modify,distributeandsellthissoftware*anditsdocumentationforanypurposeisherebygrantedwithoutfee,*providedthattheabovecopyrightnoticeappearinallcopiesand*thatbotht

2、hatcopyrightnoticeandthispermissionnoticeappear*insupportingdocumentation.Hewlett-PackardCompanymakesno*representationsaboutthesuitabilityofthissoftwareforany*purpose.Itisprovidednasis"withoutexpressorimpliedwarranty.*Copyright(c)1996-1998*SiliconGraphi

3、csComputerSystems,Inc.**Permissiontouse,copy,modify,distributeandsellthissoftware*anditsdocumentationforanypurposeisherebygrantedwithoutfee,*providedthattheabovecopyrightnoticeappearinallcopiesand*thatboththatcopyrightnoticeandthispermissionnoticeappear

4、*insupportingdocumentation.SiliconGraphicsmakesno*representationsaboutthesuitabilityofthissoftwareforany*purpose.Itisprovidednasis"withoutexpressorimpliedwarranty・/*NOTE:Thisisaninternalheaderfile,includedbyotherSTLheaders.*Youshouldnotattempttouseitdir

5、ectly.#ifndef—SGI_STL_INTERNAL_FUNCTION_H#defineSGISTLINTERNALFUNCTIONH_STL_BEGIN_NAMESPACEtemplatestructunary_function{typedef_Argargument_type;typedef_Resultresult_type;};templatestructbinary

6、_function{typedef_Arglfirst_argument_type;typedef_Arg2second_argument_type;typedef_Resultresult_type;}；templatestructplus:publicbinary_function<_Tp,_Tpz_Tp>{_Tpoperator()(const_Tp&_xrconst_Tp&_y)const{return—x+—y;}};templatestructmin

7、us:publicbinary_functione_Tp,_Tp,_Tp>{_Tpoperator()(const_Tp&—xzconst_Tp&_y)const{return—x-—y;}};templatestructmultiplies:publicbinary_function<_Tpr_Tp,_Tp>{_Tpoperator()(const_Tp&x,const_Tp&y)const{returnx*y;}}；templatestructdivides

8、:publicbiri3ry_function<_Tp,_Tp,_Tp>{_Tpoperator()(const_Tp&_xzconst_Tp&—y)const{return_x/_y;}}；//identity_eleinent(notpartoftheC++standard)•templateinline_Tpidentity_element(plus<_Tp>)(return_Tp(0);}templatei