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Passing arrays as parameters in bash
...ry1[@]}"
declare -a argAry2=("${!2}")
echo "${argAry2[@]}"
}
try_with_local_arys()
{
# array variables could have local scope
local descTable=(
"sli4-iread"
"sli4-iwrite"
"sli3-iread"
"sli3-iwrite"
)
local optsTable=(
"--msix --iread"...
Get name of current script in Python
...s is the name of the script that was originally invoked.
If you want to omit the directory part (which might be present), you can use os.path.basename(__file__).
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Relative URL to a different port number in a hyperlink?
Is there a way without Javascript / server-side scripting to link to a different port number on the same box, if I don't know the hostname?
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CROSS JOIN vs INNER JOIN in SQL
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Cross join does not combine the rows, if you have 100 rows in each table with 1 to 1 match, you get 10.000 results, Innerjoin will only return 100 rows in the same situation.
These 2 examples will return the same result:
Cross join
select * from table1 cross join table2 where table1.id = table2....
What does `void 0` mean? [duplicate]
...void (new Date())
//all will return undefined
What's the point of that?
It seems pretty useless, doesn't it? If it always returns undefined, what's wrong with just using undefined itself?
In a perfect world we would be able to safely just use undefined: it's much simpler and easier to understand...
PHP Session Security
What are some guidelines for maintaining responsible session security with PHP? There's information all over the web and it's about time it all landed in one place!
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Remove not alphanumeric characters from string
...put.replace(/\W/g, '')
Note that \W is the equivalent of [^0-9a-zA-Z_] - it includes the underscore character. To also remove underscores use e.g.:
input.replace(/[^0-9a-z]/gi, '')
The input is malformed
Since the test string contains various escaped chars, which are not alphanumeric, it will ...
How do I implement a callback in PHP?
How are callbacks written in PHP?
9 Answers
9
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How to remove EXIF data without recompressing the JPEG?
...amera info... everything!) from JPEG files, but I don't want to recompress it, as recompressing the JPEG will degrade the quality, as well as usually increasing the file size.
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How to push to a non-bare Git repository?
... usually work on a remote server via ssh (screen and vim), where I have a Git repository. Sometimes I'm not online, so I have a separate repository (cloned from my remote) on my laptop.
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