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Java array reflection: isArray vs. instanceof
Is there a preference or behavior difference between using:
8 Answers
8
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How to remove duplicate white spaces in string using Java?
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Like this:
yourString = yourString.replaceAll("\\s+", " ");
For example
System.out.println("lorem ipsum dolor \n sit.".replaceAll("\\s+", " "));
outputs
lorem ipsum dolor sit.
What does that \s+ mean?
\s+ is a regular...
Colorized grep — viewing the entire file with highlighted matches
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edited Sep 19 '17 at 6:53
Pang
8,1981717 gold badg...
Script Tag - async & defer
... Async can be used with scripts located there in a few circumstances (see discussion below). Defer won't make much of a difference for scripts located there because the DOM parsing work has pretty much already been done anyway.
Here's an article that explains the difference between async and defer...
What is the proper way to re-throw an exception in C#? [duplicate]
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edited Sep 17 '14 at 23:44
user3559599
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What is path of JDK on Mac ? [duplicate]
...ind it anywhere. I was looking at the internet for the solution, but there is no folder Libraries/Java.
5 Answers
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How can I parse a JSON file with PHP? [duplicate]
...terator::SELF_FIRST);
foreach ($jsonIterator as $key => $val) {
if(is_array($val)) {
echo "$key:\n";
} else {
echo "$key => $val\n";
}
}
Output:
John:
status => Wait
Jennifer:
status => Active
James:
status => Active
age => 56
count => 10
progress...
Grant **all** privileges on database
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GRANT ALL PRIVILEGES ON mydb.* TO 'myuser'@'%' WITH GRANT OPTION;
This is how I create my "Super User" privileges (although I would normally specify a host).
IMPORTANT NOTE
While this answer can solve the problem of access, WITH GRANT OPTION creates a MySQL user that can edit the permissions ...
Insert a line at specific line number with sed or awk
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sed -i '8i8 This is Line 8' FILE
inserts at line 8
8 This is Line 8
into file FILE
-i does the modification directly to file FILE, no output to stdout, as mentioned in the comments by glenn jackman.
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How to concatenate two MP4 files using FFmpeg?
I'm trying to concatenate two mp4 files using ffmpeg. I need this to be an automatic process hence why I chose ffmpeg. I'm converting the two files into .ts files and then concatenating them and then trying to encode that concated .ts file. The files are h264 and aac encoded and I'm hoping to kee...