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How to 'insert if not exists' in MySQL?
... solution I accepted - but will further look into handling INSERT failures etc as the app grows
– warren
Sep 7 '09 at 6:47
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Test for non-zero length string in Bash: [ -n “$var” ] or [ “$var” ]
...h a POSIX-compliant test implementation -- not just bash, but ash/dash/ksh/etc.
– Charles Duffy
Aug 15 '18 at 17:37
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What does [].forEach.call() do in JavaScript?
...);
};
Update for ES6(ES2015) and Beyond
Not only is a slice( )/array( )/etc helper method going to make life easier for people who want to use lists just like they use arrays (as they should), but for the people who have the luxury of operating in ES6+ browsers of the relatively-near future, or o...
How do I set the maximum line length in PyCharm?
...ick the checkbox.
NB: look at other tabs as well, viz. Python, HTML, JSON etc.
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How to manage client-side JavaScript dependencies? [closed]
...2 at 9:52
Chandra Sekhar WalajapetChandra Sekhar Walajapet
2,4841414 silver badges2323 bronze badges
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Why is DarkGray lighter than Gray?
...e right shade is to just use: #222 (very dark) #333 (dark) #444 (medium) etc.. I find it almost as distictive as 1, 2, 3
– David
Jul 5 '16 at 7:46
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What is the best way to get all the divisors of a number?
... multiplication and exponentiation, repeatedly multiplying the same powers etc. Looks Pythonic, but I don't think Python is about killing performance. Problem two: the divisors are not returned in order.
– Tomasz Gandor
Dec 10 '14 at 14:37
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An ASP.NET setting has been detected that does not apply in Integrated managed pipeline mode
...ept those requests and take action by denying access, logging the request, etc.
Overcoming the error:
If you are running an older application that was originally built for IIS 6, perhaps you moved it to a new server, there may be absolutely nothing wrong with running the application pool of that...
400 BAD request HTTP error code meaning?
...00 response be used to tell clients that anything, i.e. url, headers, body etc., in the request could be wrong and not just the body ?
– MasterJoe
Nov 1 '17 at 19:03
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Rails “validates_uniqueness_of” Case Sensitivity
...rvers/server processes (e.g. running Phusion Passenger, multiple Mongrels, etc) or a multi-threaded server. That's because you might get this sequence of events (the order is important):
Process A gets a request to create a new user with the name 'foo'
Process B does the same thing
Process A vali...