大约有 42,000 项符合查询结果（耗时：0.0533秒） [XML]
Appending a line to a file only if it does not already exist
I need to add the following line to the end of a config file:
10 Answers
10
...
Visual Studio Project vs. Solution
Being new to VS, how may I think of these two concepts, what is the difference?
10 Answers
...
What do ellipsis […] mean in a list?
I was playing around in python. I used the following code in IDLE:
6 Answers
6
...
How do you test functions and closures for equality?
The book says that "functions and closures are reference types". So, how do you find out if the references are equal? == and === don't work.
...
What is the best way to prevent session hijacking?
Specifically this is regarding when using a client session cookie to identify a session on the server.
12 Answers
...
When is assembly faster than C?
One of the stated reasons for knowing assembler is that, on occasion, it can be employed to write code that will be more performant than writing that code in a higher-level language, C in particular. However, I've also heard it stated many times that although that's not entirely false, the cases wh...
Finding the type of an object in C++
I have a class A and another class that inherits from it, B. I am overriding a function that accepts an object of type A as a parameter, so I have to accept an A. However, I later call functions that only B has, so I want to return false and not proceed if the object passed is not of type B.
...
How do cache lines work?
I understand that the processor brings data into the cache via cache lines, which - for instance, on my Atom processor - brings in about 64 bytes at a time, whatever the size of the actual data being read.
...
How to run a program without an operating system?
How do you run a program all by itself without an operating system running?
Can you create assembly programs that the computer can load and run at startup, e.g. boot the computer from a flash drive and it runs the program that is on the CPU?
...
Does PHP have threading?
I found this PECL package called threads , but there is not a release yet. And nothing is coming up on the PHP website.
13...