2. A defaultargument doesn't change the number of parameters.
默认实参并没有改变形参的个数。
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3. It is not permitted to declare a method parameter with a defaultargument.
不允许声明具有默认参数的方法参数。
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4. We can specify defaultargument (s) in either the function definition or declaration.
既可以在函数声明也可以在函数定义中指定默认实参。
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5. Functions can have defaultarguments, as shown for the value argument of the compute function.
函数可以有默认参数，如compute函数的值参数所示。
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6. The compiler will automatically supply the defaultargument value for the omitted argument.
编译器自动将默认实参的值提供给被忽略的实参。
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7. Defaultarguments are arguments and are treated the same way as any other argument during function matching.
默认实参也是实参，在函数匹配过程中，它的处理方式与其他实参一样。
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8. Most languages with defaultargument values only allow constants or other values that can be determined at parse-time.
大多数支持默认参数的语言只允许编译时能决定的常量或者值作为默认值。
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9. If a defaultargument is provided in the parameter list of a function definition, the default argument is available only for function calls in the source file that contains the function definition.
10. The number of hours that qualify as "recently" is configurable as a query argument, with the default being 12 hours.
标为 “最近”的小时数，是作为一个查询论据而可设置的，其默认值是12 小时。
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11. If no constructors are specified in a mixin instantiation, the default zero-argument (zeroary) constructor is assumed.
如果在mixin实例化中没有指定任何构造器，那么就假定是缺省的不带参数的(zeroary)构造器。
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12. You can override this default location with the -keepAppDirectory argument which, if overridden, will reinstall the applications to their original location.
13. Having two methods seems a bit wasteful. It would be nice if we could eliminate the second joiner method and declare that the separator argument in the first joiner has a default value.
17. If and when they have a disagreement or argument, and if they can't resolve it, happy couples default to trusting and forgiving rather than distrusting and begrudging.
当双方意见分歧，发生争吵而无法解决的时候，幸福夫妻会选择信任与原谅，而不是争辩与嫉妒。
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18. You can use the line of code shown in Listing 6 to specify a default value for an argument that is absent.
您能够使用清单6中所示代码行来为缺失的参数指定默认值。
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19. The constructor examines each property in its parameters argument; for each one, if the property exists in the prototype, then its value overrides the parameter's default value.
21. The Hello object has no method or member object called world, so the world portion of the URL is passed in as a positional argument to that object's default method.
22. Priority is an optional integer argument that can be used to specify the order in which the functions associated with a particular filter are executed (default: 10).
23. Priority is an optional integer argument that can be used to specify the order in which the functions associated with a particular action are executed (default: 10).
24. An optional integer argument that can be used to specify the order in which the functions associated with a particular filter are executed (default: 10).
25. As discussed previously, if you don't give a command-line argument, the application will use the default feed sources input XML file (rss_feed_sources.xml).
26. This handler prevents the default event (submitting the form) from being fired, sets the value of the extra ajax argument to 1, and makes an ajax Request using the original form for the URL and data.
27. This handler prevents the default event (submitting the form) from being fired, sets the value of the extra ajax argument to 1, and makes an ajax Request using the original form for the URL and data.
