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Postgresql SELECT if string contains
...> 0
Besides what is more efficient (LIKE looks less efficient, but an index might change things), there is a very minor issue with LIKE: tag_name of course should not contain % and especially _ (single char wildcard), to give no false positives.
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window.onload vs document.onload
...►Example Project:
The code above is taken from this project's codebase (index.html and keyboarder.js).
For a list of event handlers of the window object, please refer to the MDN documentation.
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Switch statement for greater-than/less-than
...ally the fastest in MSIE.
It works when you can do a calculation to get an index.
switch (Math.floor(val/1000)) {
case 0: /* do something */ break;
case 1: /* do something */ break;
...
case 29: /* do something */ break;
}
switch-range
This is about 6 to 40 times slower than the fastes...
How to automatically convert strongly typed enum into int?
...ntional (old-style) enums had tons of benefits like implicit conversion to indexes, seamless using of bitwise operations etc.. The new style enums added a really great scoping thing, but... You cannot use just that thing (even with explicit underlying type specification!). So now you're either force...
How can I delete a file from a Git repository?
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This is the only option that worked for me.
git filter-branch -f --index-filter 'git rm --cached --ignore-unmatch *.sql'
Note: Replace *.sql with your file name or file type. Be very careful because this will go through every commit and rip this file type out.
EDIT:
pay attention - after...
Why use iterators instead of array indices?
... I guess it doesn't pay to be a little tongue-in-cheek.
I think the array index is more readable. It matches the syntax used in other languages, and the syntax used for old-fashioned C arrays. It's also less verbose. Efficiency should be a wash if your compiler is any good, and there are hardly a...
What's the _ underscore representative of in Swift References?
...at we merely want to execute the block 5 times and we don't care about the index within the block.
In this context:
let (result, _) = someFunctionThatReturnsATuple()
It means that we don't care what the second element of the tuple is, only the first.
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How to do a batch insert in MySQL
...pStmt.executeBatch();
http://publib.boulder.ibm.com/infocenter/db2luw/v8/index.jsp?topic=/com.ibm.db2.udb.doc/ad/tjvbtupd.htm
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How to programmatically show next view in ViewPager?
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As blessenm answered viewpager.setCurrentItem(int index) is the way to go.
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MySQL/SQL: Group by date only on a Datetime column
...in mind that using such a function - DATE() does not allow you to leverage indexes on this column.
– Kamil Bednarz
Oct 29 '15 at 9:01
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