大约有 38,376 项符合查询结果（耗时：0.0511秒） [XML]
How do I list all cron jobs for all users?
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answered Sep 25 '08 at 18:07
Kyle BurtonKyle Burton
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How to get current foreground activity context in android?
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ComponentName cn = am.getRunningTasks(1).get(0).topActivity;
UPDATE 2018/10/03
getRunningTasks() is DEPRECATED. see the solutions below.
This method was deprecated in API level 21.
As of Build.VERSION_CODES.LOLLIPOP, this method is no longer available to third party applications: the introducti...
How many threads can a Java VM support?
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answered Apr 18 '09 at 15:16
EddieEddie
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How can I search for a multiline pattern in a file?
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TheDude
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answered Sep 15 '10 at 13:26
AmitAmit
2,68...
Changing website favicon dynamically
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418
Why not?
(function() {
var link = document.querySelector("link[rel*='icon']") || document.c...
How to trigger the window resize event in JavaScript?
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edited Jun 26 at 14:08
BuZZ-dEE
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answered No...
Getting name of the class from an instance
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398
NSStringFromClass([instance class]) should do the trick.
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How to grep (search) committed code in the Git history
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Nickolay
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answered May 28 '10 at 13:47
JeetJeet
3...
Why is an int in OCaml only 31 bits?
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mattbasta
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answered Sep 22 '10 at 23:50
Jörg W MittagJörg W Mittag
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Simple Digit Recognition OCR in OpenCV-Python
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samples = np.empty((0,100))
responses = []
keys = [i for i in range(48,58)]
for cnt in contours:
if cv2.contourArea(cnt)>50:
[x,y,w,h] = cv2.boundingRect(cnt)
if h>28:
cv2.rectangle(im,(x,y),(x+w,y+h),(0,0,255),2)
roi = thresh[y:y+h,x:x+w]
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