用 get_defined_constants() 可以获得所有已定义的常量列表。 Note: 常量和(全局)变量在不同的名字空间中。这意味着例如 TRUE 和 $TRUE 是不同的。 如果使用了一个未定义的常量,PHP 假定想要的是该常量本身的名字,如同用字符串调用它一样(CONSTANT 对应 php 语法1 ,FALSE(true,false)不区
Why not code the constants manually by using preprocessed files like this for termios.h on Linux: echo "#include <termios.h>" > c.c gcc -dD -dI -E c.c > _termios-prepocessed.h Doing this once will give you all defines,structures, function calls in _termios-prepocessed.h, so you...
Here, we are going to learn how to define macros –In this example, we are defining two Macros YES and NO by using #define preprocessor directive.
if (zend_memnstr(name, "::", sizeof("::") - 1, name + name_len)) { zend_error(E_WARNING, "Class constants cannot be defined or redefined"); RETURN_FALSE; } // 获取真正的值,用val保存 repeat: switch (Z_TYPE_P(val)) { case IS_LONG: case IS_DOUBLE: case IS_STRING: case ...
Learn how to define getter and setter functions in JavaScript to manage object properties effectively.
class); module.defineConstant("MAJOR_VERSION", runtime.newFixnum(Constants.MARSHAL_MAJOR)); module.defineConstant("MINOR_VERSION", runtime.newFixnum(Constants.MARSHAL_MINOR)); return module; } origin: org.jruby/jruby-complete RubyMath.createMathModule(...) /** Create the Math module and ...
Since: 9.2 Author: Pedro Ruivo Nested Class Summary Nested classes/interfaces inherited from class java.util.concurrent.CompletableFuture CompletableFuture.AsynchronousCompletionTask Nested classes/interfaces inherited from interface org.infinispan.client.hotrod.impl.protocol.HotRodConsta...
class); ioClass.kindOf = new RubyModule.JavaClassKindOf(RubyIO.class); ioClass.includeModule(runtime.getEnumerable()); ioClass.defineAnnotatedMethods(RubyIO.class); // Constants for seek ioClass.setConstant("SEEK_SET", runtime.newFixnum(PosixShim.SEEK_SET)); ioClass.setConstant("SEEK_CUR",...
Java Tutorials - Herong's Tutorial Examples∟Enum Types and Enum Constants∟Use 'class' to Define Enumeration This section provides a tutorial on how to define a set of enumeratin constants use a 'class' declaration statement.© 2025 Dr. Herong Yang. All rights reserved.If you don't like...
类型化常量 (TYPED CONSTANTS) #define ANIMATION_DURATION 0.3 这是一个预处理器指令,当编译器在代码中发现有 ANIMATION_DURATION 时,就将它替换为 0.3,编译器不知道这个字符串所指代的数值属性. 更好的办法是用常量去替代预处理器定义: static const NSTimerInterval kAnimationDuration = 0.3 这样清楚地定义了这个...