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What's the difference between INNER JOIN, LEFT JOIN, RIGHT JOIN and FULL JOIN? [duplicate]
... is the top middle picture not SELECT * FROM A INTERSECT SELECT * FROM B ? etc
– onedaywhen
Sep 9 '11 at 10:41
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Java switch statement multiple cases
...d I do this all the time:
switch (variable)
{
case 5:
case 6:
etc.
case 100:
doSomething();
break;
}
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Delete text in between HTML tags in vim?
...y repeated at (or it) to progressively select surrounding tags . (Or v2at, etc). Then d to delete (etc).
– Joe Freeman
Feb 16 '17 at 17:09
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Formatting a number with exactly two decimals in JavaScript
... my numbers to two decimal places. But I get numbers like this: 10.8, 2.4, etc. These are not my idea of two decimal places so how I can improve the following?
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What are the benefits of Java's types erasure?
... optimisations on the code - make it run faster, generate a smaller binary etc. Erasure of type parameters facilitates this.
Java breaks static typing by allowing type information to be queried at runtime - reflection, instanceof etc. This allows you to construct programs that cannot be statically ...
Factory Pattern. When to use factory methods?
...one, you need to know a lot of stuff - benefits, eligibility verification, etc. But the person hiring doesn't need to know any of this - the hiring agency handles all of that.
In the same way, using a Factory allows the consumer to create new objects without having to know the details of how they...
How can I increment a char?
...
I came from PHP, where you can increment char (A to B, Z to AA, AA to AB etc.) using ++ operator. I made a simple function which does the same in Python. You can also change list of chars to whatever (lowercase, uppercase, etc.) is your need.
# Increment char (a -> b, az -> ba)
def inc_char...
How to negate the whole regex?
...tch. Some flavor supports assertions; some puts limitations on lookbehind, etc.
Links to regular-expressions.info
Lookahead and Lookbehind Zero-Width Assertions
Flavor comparison
See also
How do I convert CamelCase into human-readable names in Java?
Regex for all strings not containing a stri...
Best practices for in-app database migration for Sqlite
... necessary to go from version 1 to version 2, then version 2 to version 3, etc... until it is up to date. An easy way to do this is to have a switch statement where each "case" statement updates the database by one version. You "switch" to the current database version, and the case statements fall...
Removing duplicates from a list of lists
...e quadratic approach isn't bad, but the sort and groupby ones are better. Etc, etc.
If (as the obsession with performance suggests) this operation is at a core inner loop of your pushing-the-boundaries application, it's worth trying the same set of tests on other representative input samples, poss...