The compiler will treat them equally.
The compiler will find those errors and report them to you.
The compiler will announce that the variable x has already been defined.
If there are errors, the compiler will tell you what you did wrong.Combinations with other parts of speech
The compiler will complain that it needs lifetime specifiers:.
Hopefully the compiler will detect this!
Of course, if they are private, the compiler will issue a warning.
C, and if it doesn't, the compiler may refuse to process it.一个好的优化编译器会在可能的情况下用乘法替换乘法。
A good optimizing compiler will replace multiplications with shifts when possible.
In fact, JSX compiler will indicate the line number where a mistake is.
The spinmasters will tell you what the problem is.
The Java compiler will throw an error.因此编译器会检查当前文件夹或-I定义的文件夹中的这些头文件。
So the compiler will check for these header files in the current folder or-I defined folders.编译器会看到同样数据流,因为它会如果program.c读取.
The compiler will see the same token stream as it would if program. c read.因为i和j都是int类型,编译器会自动假设我们想要函数按照int进行调用。
Since being both i and j of type int the compiler would assume automatically that the wished function is for type int.
When we do, the compiler will give us an error that we're using the..编译器会创建foo()的调用路径,并记住foo()的地址。
The compiler will create a routine for foo() and remember its address.如果C语言能明确区分整型和布尔型,那么编译器会替我们发现这个问题……但是它不会那么做。
If the C language included a strong distinction between integers andbooleans then the compiler would find these mistakes for us… but it doesn't.如果一个头文件被引用两次,编译器会处理两次头文件的内容,这将产生错误。
If a header file happens to be included twice, the compiler will process its contents twice and will result an error.在这个情况下,编译器会创建两个函数表,一个是ParentClass的,另一个是ChildClass的:.
In this scenario, the compiler will create two dispatch tables, one for ParentClass, and one for ChildClass:.例如,在Rust中引入并行是相对低风险的操作:编译器会为你捕获经典的错误。
For example,introducing parallelism in Rust is a relatively low-risk operation: the compiler will catch the classical mistakes for you.如果我们试图从其他外部的if或者else访问num,编译器会不通过。
If we try to access num from outside the if orelse, the compiler will complain.
If you're just borrowing an object the compiler will keep track of that.可以被用于任何地方,它是表示各种类型零值的符号并且编译器会挑出它.
Can be used anywhere,it is the generic symbol for each type's zero value and the compiler will sort things out.编译器会允许你这样做,但是就像我们刚刚所看到的一样,我们无法确保代码是否能够按要求运行。
Compilers will let you do it, but as we have just seen, that's no guarantee the code will behave properly.完成之后,JIT编译器会观测程序运行,对使用频繁的方法进行更为优化的二次编译。
After this is completed, the JIT compiler will observe program operation, and heavily used methods will receive a second more optimized compilation pass.将TypeScript代码编译成ES5时,TypeScript编译器会向最终输出的JavaScript文件添加一些辅助函数。
When compiling TypeScript code to ES5, the TypeScript Compiler will also emit some helper functions to the output JavaScript file.
Your Java compiler will optimize this and perform the concatenation at compile time.