大约有 47,000 项符合查询结果（耗时：0.0561秒） [XML]
Declaring Multiple Variables in JavaScript
...ion is a single statement on a single line, so you can easily add, remove, and reorder the declarations.
With the second way, it is annoying to remove the first or last declaration because they start from the var keyword and finish with the semicolon respectively. Every time you add a new declaratio...
What is a “symbol” in Julia?
...ent than a string is that strings are mutable while symbols are immutable, and symbols are also "interned" – whatever that means. Strings do happen to be mutable in Ruby and Lisp, but they aren't in Julia, and that difference is actually a red herring. The fact that symbols are interned – i.e....
Why can't non-default arguments follow default arguments?
...ters must be placed before any default arguments. Simply because they are mandatory, whereas default arguments are not. Syntactically, it would be impossible for the interpreter to decide which values match which arguments if mixed modes were allowed. A SyntaxError is raised if the arguments are not...
CSS: How do I auto-resize an image to fit a 'div' container?
...ight: 100%;
}
.portrait {
height: 80px;
width: 30px;
}
.landscape {
height: 30px;
width: 80px;
}
.square {
height: 75px;
width: 75px;
}
Portrait Div
<div class="portrait">
<img src="http://i.stack.imgur.com/xkF9Q.jpg">
</div>
La...
Difference between CLOCK_REALTIME and CLOCK_MONOTONIC?
Could you explain the difference between CLOCK_REALTIME and CLOCK_MONOTONIC clocks returned by clock_gettime() on Linux?
...
How does Java Garbage Collection work with Circular References?
From my understanding, garbage collection in Java cleans up some objects if nothing else is 'pointing' to that object.
8 An...
Browser support for URLs beginning with double slash
... few links used without a protocol. It didn't seem too difficult to understand - I think it's a great idea and pretty intuitive.
...
Find XOR of all numbers in a given range
You are given a large range [a,b] where 'a' and 'b' can be typically between 1 and 4,000,000,000 inclusive. You have to find out the XOR of all the numbers in the given range.
...
How to open, read, and write from serial port in C?
I am a little bit confused about reading and writing to a serial port. I have a USB device in Linux that uses the FTDI USB serial device converter driver. When I plug it in, it creates: /dev/ttyUSB1.
...
Best Practices: Salting & peppering passwords?
...t what I'd been doing wasn't in fact salting passwords but peppering them, and I've since begun doing both with a function like:
...