大约有 14,200 项符合查询结果（耗时：0.0232秒） [XML]
Switching from zsh to bash on OSX, and back again?
...
You can just use exec to replace your current shell with a new shell:
Switch to bash:
exec bash
Switch to zsh:
exec zsh
This won't affect new terminal windows or anything, but it's convenient.
...
AJAX POST and Plus Sign ( + ) — How to Encode?
I'm POSTing the contents of a form field via AJAX to a PHP script and using JavaScript to escape(field_contents) . The problem is that any plus signs are being stripped out and replaced by spaces. How can I safely 'encode' the plus sign and then appropriately 'decode' it on the PHP side?
...
Find when a file was deleted in Git
...e path] shows the changes of a file, work even if the file was deleted.
Example:
git log --full-history -- myfile
If you want to see only the last commit, which deleted a file use -1 in addition, e.g., git log --full-history -1 -- [file path]
See Which commit deleted a file
...
Dispelling the UIImage imageNamed: FUD
...ince then. Retina makes images bigger and loading them slightly more complex. With the built in support for iPad and retina images, you should certainly use ImageNamed in your code .
...
Positive Number to Negative Number in JavaScript?
...s negative
You do realize however, that for your code
if($this.find('.pdxslide-activeSlide').index() < slideNum-1){ slideNum = -slideNum }
console.log(slideNum)
If the index found is 3 and slideNum is 3,
then 3 < 3-1 => false
so slideNum remains positive??
It looks more like a logic e...
Using IPython notebooks under version control
... (for the following, let us assume ~/bin/ipynb_output_filter.py)
Make it executable (chmod +x ~/bin/ipynb_output_filter.py)
Create the file ~/.gitattributes, with the following content
*.ipynb filter=dropoutput_ipynb
Run the following commands:
git config --global core.attributesfile ~/.gitat...
Understanding Apache's access log
...e this : ... "Mozilla/5.0 (Windows NT 5.1; rv:16.0) Gecko/20100101 Firefox/16.0" 369 74500 - 567 what do they indicate?
– my account_ram
Jan 29 '14 at 21:18
...
Find the day of a week
... Thursday
Edit: Just to show another way...
The wday component of a POSIXlt object is the numeric weekday (0-6 starting on Sunday).
as.POSIXlt(df$date)$wday
## [1] 3 3 4
which you could use to subset a character vector of weekday names
c("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday",...
round up to 2 decimal places in java? [duplicate]
...
@SiB floor(x + 0.5) is different to round(x) for just one value, the value immediately less than 0.5. This is because 0.49999999999999994 + 0.5 is 1.0 when it should be rounded down to 0.0
– Peter Lawrey
...