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How to print third column to last column?
...e the same between all columns, but there have to be EXACTLY ONE delimiter character between columns. So if you are dealing with programs that align their output with delimiters, it is better to use awk.
– sknaumov
Aug 21 '12 at 12:40
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Android: I am unable to have ViewPager WRAP_CONTENT
...e super.onMeasure(widthMeasureSpec, heightMeasureSpec); call. Putting the extra super.onMeasure() call at the start of this function did the trick. Also check stackoverflow.com/questions/38492210/…
– southerton
Aug 17 '16 at 11:30
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What is the reason not to use select *?
...ng all the columns now, it doesn't mean someone else isn't going to add an extra column to the table.
It also adds overhead to the plan execution caching since it has to fetch the meta data about the table to know what columns are in *.
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Standard deviation of a list
... would expect. I couldn't edit the post as edits need to modify at least 6 chars...
– mknaf
Jan 6 '17 at 16:00
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Best way to create custom config options for my Rails app?
...th_indifferent_access" allows you to access the values in the hash using a string key or with an equivalent symbol key.
eg.
APP_CONFIG['audiocast_uri_format'] => 'http://blablalba/blabbitybla/yadda'
APP_CONFIG[:audiocast_uri_format] => 'http://blablalba/blabbitybla/yadda'
Purely a convenie...
What are the differences in die() and exit() in PHP?
... have two exit functions now! Let's make it so that they both
can take a string or integer as an argument and make them identical!"
The end result is that this didn't really make things any "easier",
just more confusing. C and Perl coders will continue to use exit() to
toss an integer exi...
How to deal with floating point number precision in JavaScript?
...
toPrecision returns a string instead of a number. This might not always be desirable.
– SStanley
Mar 13 '16 at 23:42
7
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Postgres and Indexes on Foreign Keys and Primary Keys
...le, you will have an index on the PK and probably don't need to create any extra indexes.
While it's usually a good idea to create an index on (or including) your referencing-side foreign key columns, it isn't required. Each index you add slows DML operations down slightly, so you pay a performance...
IN vs OR in the SQL WHERE Clause
... say you should profile on a specific implementation. I'd imagine that the extra structure of the IN method makes it easier to optimize than a whole bunch of possibly related OR clauses. I'd be surprised if there is an engine where the OR method is faster, but I'm not surprised that there are times ...
Check if one IEnumerable contains all elements of another IEnumerable
...ter than the others. Thanks for the tip.
– Brandon Zacharie
Jul 18 '10 at 11:21
2
This does not w...