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How to check if a function exists on a SQL database
I need to find out if a function exists on a database, so that I can drop it and create it again. It should basically be something like the following code that I use for stored procedures:
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Check existence of input argument in a Bash shell script
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It is:
if [ $# -eq 0 ]
then
echo "No arguments supplied"
fi
The $# variable will tell you the number of input arguments the script was passed.
Or you can check if an argument is an empty string or not like:
if [ -z "$1" ]
t...
How expensive is RTTI?
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Regardless of compiler, you can always save on runtime if you can afford to do
if (typeid(a) == typeid(b)) {
B* ba = static_cast<B*>(&a);
etc;
}
instead of
B* ba = dynamic_cast<B*>(&a);
if (ba) {
etc;
}
The former involves only one comparison of s...
How to check if array is empty or does not exist? [duplicate]
What's the best way to check if an array is empty or does not exist?
1 Answer
1
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Test if a string contains any of the strings from an array
How do I test a string to see if it contains any of the strings from an array?
14 Answers
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Check if URL has certain string with PHP
I would like to know if some word is present in the URL.
15 Answers
15
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Shorten string without cutting words in JavaScript
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If I understand correctly, you want to shorten a string to a certain length (e.g. shorten "The quick brown fox jumps over the lazy dog" to, say, 6 characters without cutting off any word).
If this is the case, you can try so...
How to automatically reload a page after a given period of inactivity
How can I automatically reload a webpage, if there have been no activity on the page for a given period of time?
14 Answers...
Check if string begins with something? [duplicate]
I know that I can do like ^= to see if an id starts with something, and I tried using that for this, but it didn't work... Basically, I'm retrieving the url and I want to set a class for an element for pathnames that start in a certain way...
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Check if a row exists, otherwise insert
I need to write a T-SQL stored procedure that updates a row in a table. If the row doesn't exist, insert it. All this steps wrapped by a transaction.
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