大约有 47,000 项符合查询结果（耗时：0.0257秒） [XML]
Days between two dates? [duplicate]
What's the shortest way to see how many full days have passed between two dates?
Here's what I'm doing now.
4 Answers
...
How can you profile a Python script?
Project Euler and other coding contests often have a maximum time to run or people boast of how fast their particular solution runs. With Python, sometimes the approaches are somewhat kludgey - i.e., adding timing code to __main__ .
...
Why does 0.ToString(“#.##”) return an empty string instead of 0.00 or at least 0?
Why does 0.ToString("#.##") return an empty string? Shouldn't it be 0.00 or at least 0 ?
5 Answers
...
How do I do base64 encoding on iOS?
I'd like to do base64 encoding and decoding, but I could not find any support from the iPhone SDK . How can I do base64 encoding and decoding with or without a library?
...
Performance of foreach, array_map with lambda and array_map with static function
What's the performance difference (if there is any) between these three approaches, both used to transform an array to another array?
...
Inline elements shifting when made bold on hover
I created a horizontal menu using a HTML lists and CSS. Everything works as it should except when you hover over the links. You see, I created a bold hover state for the links, and now the menu links shift because of the bold size difference.
...
Vagrant's port forwarding not working [closed]
I'm running into a small problem at the end of the Getting Started guide for vagrant . I'm working on a CentOS basebox that has Apache2 running (provisioning via Puppet). I've set up port forwarding for web requests using the following line in Vagrantfile :
...
Is 'float a = 3.0;' a correct statement?
If I have the following declaration:
8 Answers
8
...
How to create GUID / UUID?
I'm trying to create globally-unique identifiers in JavaScript. I'm not sure what routines are available on all browsers, how "random" and seeded the built-in random number generator is, etc.
...
How can I remove the decimal part from JavaScript number?
I have the results of a division and I wish to discard the decimal portion of the resultant number.
14 Answers
...