大约有 43,100 项符合查询结果（耗时：0.0457秒） [XML]
How can I capitalize the first letter of each word in a string?
...
18 Answers
18
Active
...
Is there any way to git checkout previous branch?
...
1282
From the release notes for 1.6.2
@{-1} is a way to refer to the last branch you were on. ...
Calculate the median of a billion numbers
... Probably too late if this had been an interview, but never mind:
Machine 1 shall be called the "control machine", and for the sake of argument either it starts with all the data, and sends it in equal parcels to the other 99 machines, or else the data starts evenly distributed between the machines...
Why can a function modify some arguments as perceived by the caller, but not others?
...
11 Answers
11
Active
...
HTTP error 403 in Python 3 Web Scraping
...
213
This is probably because of mod_security or some similar server security feature which blocks k...
How to create a cron job using Bash automatically without the interactive editor?
...ontab
crontab -l > mycron
#echo new cron into cron file
echo "00 09 * * 1-5 echo hello" >> mycron
#install new cron file
crontab mycron
rm mycron
Cron line explaination
* * * * * "command to be executed"
- - - - -
| | | | |
| | | | ----- Day of week (0 - 7) (Sunday=0 or 7)
| | | ------...
Using 'return' in a Ruby block
I'm trying to use Ruby 1.9.1 for an embedded scripting language, so that "end-user" code gets written in a Ruby block. One issue with this is that I'd like the users to be able to use the 'return' keyword in the blocks, so they don't need to worry about implicit return values. With this in mind, t...
How do you test to see if a double is equal to NaN?
... static Double.isNaN(double) method, or your Double's .isNaN() method.
// 1. static method
if (Double.isNaN(doubleValue)) {
...
}
// 2. object's method
if (doubleObject.isNaN()) {
...
}
Simply doing:
if (var == Double.NaN) {
...
}
is not sufficient due to how the IEEE standard for ...
Difference between len() and .__len__()?
Is there any difference between calling len([1,2,3]) or [1,2,3].__len__() ?
4 Answers
...