大约有 46,000 项符合查询结果（耗时：0.0565秒） [XML]
Count number of occurrences of a pattern in a file (even on same line)
... line (a{foo}barfoobar) the searching stops. Only one line was checked and it matched, so the output is 1. Actually -o is ignored here and you could just use grep -c instead.
2.
$ echo afoobarfoobar | grep -o foo
foo
foo
$ echo afoobarfoobar | grep -o foo | wc -l
2
Two matches are found in the ...
Is there a Python Library that contains a list of all the ascii characters?
...follow
|
edited May 5 '11 at 1:17
answered May 5 '11 at 0:44
...
Storing R.drawable IDs in XML array
... an array using an XML values file, and then retrieve the array in my activity.
5 Answers
...
Coding in Other (Spoken) Languages
This is something I've always wondered, and I can't find any mention of it anywhere online. When a shop from, say Japan, writes code, would I be able to read it in English? Or do languages, like C, PHP, anything, have Japanese translations that they write?
...
cv2.imshow command doesn't work properly in opencv-python
...on 2.7
The following simple code created a window of the correct name, but its content is just blank and doesn't show the image:
...
Get current URL of UIWebView
I already tried getting the current URL of my UIWebView with: webview.request.URL .
Unfortunately the NSURL was empty. Anything wrong here? I am working with Xcode 3.2.2 beta 5.
...
Is there a way to delete a line in Visual Studio without cutting it?
I want to delete a line just like hitting Ctrl + X without anything selected, but without saving the line to the copy stack. Is this possible?
...
What is a lambda (function)?
For a person without a comp-sci background, what is a lambda in the world of Computer Science?
23 Answers
...
Display names of all constraints for a table in Oracle SQL
...t;your table name>';
FYI, unless you specifically created your table with a lower case name (using double quotes) then the table name will be defaulted to upper case so ensure it is so in your query.
If you then wish to see more information about the constraint itself query the USER_CONSTRAINT...
How can I extract a good quality JPEG image from a video file with ffmpeg?
...
Use -qscale:v to control quality
Use -qscale:v (or the alias -q:v) as an output option.
Normal range for JPEG is 2-31 with 31 being the worst quality.
The scale is linear with double the qscale being roughly half the bitrate.
Recommend trying values of ...