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What's the difference between eval, exec, and compile?
...nd exec is used to execute dynamically generated Python code only for its side effects.
eval and exec have these two differences:
eval accepts only a single expression, exec can take a code block that has Python statements: loops, try: except:, class and function/method definitions and so on.
A...
Checkboxes in web pages – how to make them bigger?
...d color.
input[type='checkbox'] {
-webkit-appearance:none;
width:30px;
height:30px;
background:white;
border-radius:5px;
border:2px solid #555;
}
input[type='checkbox']:checked {
background: #abd;
}
<input type="checkbox" />
...
Map Tiling Algorithm
...
The basic idea of this algorithm is to use a pre-processing step to find all edges and then select the correct smoothing tile according to the shape of the edge.
The first step would be to find all edges. In the example below the edge...
Remove Safari/Chrome textinput/textarea glow
...
Edit (11 years later): Don't do this unless you're going to provide a fallback to indicate which element is active. Otherwise, this harms accessibility as it essentially removes the indication showing which element in a document has focus. Imagine being a keyboard user and not really know...
What's the difference between a continuation and a callback?
...e of the tail call).
Bonus: Proceeding to continuation passing style. Consider the following program:
console.log(pythagoras(3, 4));
function pythagoras(x, y) {
return x * x + y * y;
}
Now if every operation (including addition, multiplication, etc.) were written in the form of...
What is the difference between trie and radix trie data structures?
...
Thanks...Can you provide me with a good resource to study trie DS ... That would be of great help ...
– Aryak Sengupta
Feb 5 '13 at 13:58
...
How to dump a dict to a json file?
...
print(j, file=f) didn't work for me,I didn't need to do the J part as well. d = {'a':1, 'b':2} print(d, file=open('sample.json', 'wt')) worked.
– H S Rathore
May 23 at 7:08
...
【内核源码】linux UDP实现 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...TABLISHED; //进入TCP_ESTABLISHED状态
sk_set_txhash(sk);
inet->inet_id = jiffies;
sk_dst_set(sk, &rt->dst);
}
sendto
sys_sendto()->sock_sendmsg()->sock_sendmsg_nosec()->inet_sendmsg()
static int inet_autobind(struct sock *sk)
{
struct inet_sock *inet;
/* We may need to bind the s...
Git pull results in extraneous “Merge branch” messages in commit log
... to use rebasing instead of merging is possible, but usually you should avoid it. Rebasing allows you to keep a linear history, but also removes any information about the branching that originally happened. It will also cause the history of the current branch being rewritten, recreating all commits ...
Android应用开发性能优化完全分析 - 更多技术 - 清泛网 - 专注C/C++及内核技术
Android应用开发性能优化完全分析1 背景其实有点不想写这篇文章的，但是又想写，有些矛盾。不想写的原因是随便上网一搜一堆关于性能的建议，感觉大家你一总结、我一总结的...1 背景
其实有点不想写这篇文章的，但是又想...