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How to avoid isset() and empty()
I have several older applications that throw a lot of "xyz is undefined" and "undefined offset" messages when running on the E_NOTICE error level, because the existence of variables is not explicitly checked using isset() and consorts.
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Redis strings vs Redis hashes to represent JSON: efficiency?
...n a single key and keep track of all Objects using a set (or list, if more appropriate). For example:
INCR id:users
SET user:{id} '{"name":"Fred","age":25}'
SADD users {id}
Generally speaking, this is probably the best method in most cases. If there are a lot of fields in the Object, your Objects...
Can “this” ever be null in Java?
...like foo.bar() would be thrown when foo is discovered to be null. it does happen before entering the method, but the real story is that there is no method to attempt to call.
– Claudiu
Sep 24 '10 at 17:34
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What is the simplest and most robust way to get the user's current location on Android?
...ationManager API on Android seems like it's a bit of a pain to use for an application that only needs an occasional and rough approximation of the user's location.
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Easiest way to activate PHP and MySQL on Mac OS 10.6 (Snow Leopard), 10.7 (Lion), 10.8 (Mountain Lio
...mysql.sock. There are reports that this is fixed in 10.6, but that doesn't appear to be the case for all of us, given some of the comments below.
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How to force the browser to reload cached CSS/JS files?
...hing your files as a build step is common and suggested for modern bundled apps
– Brandon Søren Culley
Apr 13 '18 at 22:45
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How do you test private methods with NUnit?
... +1 I've just come up against this issue and in my case there's a "mapping" algorithm that happens in between the private and the public meaning if I were to Unit Test the public, it would actually be an integration test. In this scenario I think it trying to write the test points to a design...
How to import a module given its name as string?
I'm writing a Python application that takes as a command as an argument, for example:
11 Answers
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.NET: Which Exception to Throw When a Required Configuration Setting is Missing?
...itation on how you choose to use/reuse an existing exception.
It's your application- as long as you document it and clearly indicate the exception that will be thrown in the specific case of a missing configuration value, you can use any exception you like. If you do want a very specific indicat...
Execute combine multiple Linux commands in one line
...passx; password-gorilla"
But it does not work as I want. I.E., the first app starts but the second starts only when the previous is closed
However, I found that (with only one ampersand):
sh -c "keepassx & password-gorilla"
and it works as I want now...