大约有 15,210 项符合查询结果（耗时：0.0244秒） [XML]
How to draw border around a UILabel?
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In Swift the first line would read: myLabel.layer.borderColor = UIColor.greenColor().CGColor
– Roshambo
Jan 21 '15 at 22:17
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How can I list the contents of a directory in Python?
...e to know if it's a file or not, and that saves CPU time because stat is already done when scanning dir in Windows:
example to list a directory and print files bigger than max_value bytes:
for dentry in os.scandir("/path/to/dir"):
if dentry.stat().st_size > max_value:
print("{} is bi...
If isset $_POST
...t filled up, so you must check for the emptiness too.
Since !empty() is already checks for both, you can use this:
if (!empty($_POST["mail"])) {
echo "Yes, mail is set";
} else {
echo "No, mail is not set";
}
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cv2.imshow command doesn't work properly in opencv-python
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imshow() only works with waitKey():
import cv2
img = cv2.imread('C:/Python27/03323_HD.jpg')
cv2.imshow('ImageWindow', img)
cv2.waitKey()
(The whole message-loop necessary for updating the window is hidden in there.)
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Java String array: is there a size of method?
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Read the first sentence of docs.oracle.com/javase/specs/jls/se8/html/jls-10.html and then try telling us that arrays aren't objects. ;)
– Michael Myers♦
May 28 '09 at 16:05
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Any decent text diff/merge engine for .NET? [closed]
...do not delete, Site would be more useful if this type of thing were allow (read: another site will allow this, and more, and rise up and turn SO into experts-exchange if useful questions like this keep getting closed for reasons based on the faulty hypothesis in the SO faq).
– ...
How do I catch an Ajax query post error?
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Also, I way to make $.ajax more readable is to use a hash for your data. For example: { name : 'John', location: 'Boston' }
– briangonzalez
Jan 24 '13 at 15:56
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Converting integer to binary in python
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Does not work for negative integer bin(-6)[2:].zfill(8) reads as '0000b110'
– jlandercy
Dec 14 '19 at 7:19
add a comment
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SQL command to display history of queries
...-date with your open MySQL CLI so you're likely to have to exit MySQL then read the file.
– Joel Mellon
May 25 '16 at 17:44
1
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What is the command to list the available avdnames
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do
echo "$N) $DEVICE"
let N=$N+1
done
# Request an emulator to start
read -p "
Choose an emulator: " num
# If the input is valid, launch our emulator on a separate PID and exit
if [ $num -lt $N ] && [ $num -gt 0 ];
then
DEVICE=${DEVICES[$num-1]}
emulator "@$DEVICE" > /dev/null ...