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What GRANT USAGE ON SCHEMA exactly do?
I'm trying to create for the first time a Postgres database, so this is probably a stupid question. I assigned basic read-only permissions to the db role that must access the database from my php scripts, and I have a curiosity: if I execute
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Is there a standard function to check for null, undefined, or blank variables in JavaScript?
Is there a universal JavaScript function that checks that a variable has a value and ensures that it's not undefined or null ? I've got this code, but I'm not sure if it covers all cases:
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iPhone Navigation Bar Title text color
It seems the iOS Navigation Bar title color is white by default. Is there a way to change it to a different color?
32 Answe...
Unique random string generation
I'd like to generate random unique strings like the ones being generated by MSDN library.( Error Object ), for example. A string like 't9zk6eay' should be generated.
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Get a random item from a JavaScript array [duplicate]
How do I get random item from items ?
13 Answers
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Calculate difference between two datetimes in MySQL
I am storing the last login time in MySQL in, datetime -type filed. When users logs in, I want to get the difference between the last login time and the current time (which I get using NOW() ).
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How to include a Font Awesome icon in React's render()
Whenever I try to use a Font Awesome icon in React's render() , it isn't displayed on the resulting web page although it works in normal HTML.
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git diff between cloned and original remote repository
I have cloned a github repository and made no changes locally. Github repository moved forward with commits on the same branch.
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Does a finally block always run?
Is there any condition where finally might not run in java? Thanks.
12 Answers
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Automatic exit from bash shell script on error [duplicate]
I've been writing some shell script and I would find it useful if there was the ability to halt the execution of said shell script if any of the commands failed. See below for an example:
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