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When to use an assertion and when to use an exception
...te that the java command turns off all assertions by default.)
Use regular tests for any kind of checks what shouldn't be turned off. This includes defensive checks that guard against potential damage cause by bugs, and any validation data / requests / whatever provided by users or external service...
SQL Server: Maximum character length of object names
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I think that by "comprobation" you might have meant "test" or "verification". Am I right?
– Stephen G Tuggy
Apr 13 '18 at 21:15
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What is the difference between trie and radix trie data structures?
...link back up the tree somewhere, so a search terminates when the offset to test decreases rather than increasing. Here's a simple diagram of such a tree (though PATRICIA really is more of a cyclic graph, than a tree, as you'll see), which was included in Sedgewick's book mentioned below:
A more c...
SQL JOIN vs IN performance?
...le vs MySQL vs SQL Server: Aggregation vs Joins
Short answer: you have to test it and individual databases vary a lot.
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Good way of getting the user's location in Android
...e application ;-)
Here is my current implementation. I'm still in the beta testing phase of my GPS uploader app, so there might be many possible improvements. but it seems to work pretty well so far.
/**
* try to get the 'best' location selected from all providers
*/
private Location getBestLocat...
How to determine if a string is a number with C++?
... if you limit it only to "0123456789" then the formula is perfect to test for unsigned integer
– no one special
Feb 13 '19 at 10:44
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Why does NULL = NULL evaluate to false in SQL server
...f NULL you think of “NULL” (string) then you probably want a different test of equality like Postgresql's IS DISTINCT FROM AND IS NOT DISTINCT FROM
From the PostgreSQL docs on "Comparison Functions and Operators"
expression IS DISTINCT FROM expression
expression IS NOT DISTINCT FROM expression
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How to add an email attachment from a byte array?
...o's Attachment class calls Dispose on the content stream, and from a quick test case, .NET 4.0 does the same. I'm not super-amused that this is the case, but there it is.
– Matt Enright
May 19 '11 at 22:12
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What does “|=” mean? (pipe equal operator)
...gs |= DEFAULT_LIGHTS;
simply means we add a flag.
And symmetrically, we test a flag is set using & :
boolean hasVibrate = (DEFAULT_VIBRATE & myFlags) != 0;
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How to use mod operator in bash?
...le mathematically -12 mod 10 is 8, bash will calculate it as -2. You can test it with simple echo $((-12 % 10)) (-2) and compare it with python3 python3 -c "print(-12 % 10)" (8).
– Lirt
Jan 28 '19 at 22:39
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