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Meaning of tilde in Linux bash (not home directory)
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It's a Bash feature called "tilde expansion". It's a function of the shell, not the OS. You'll get different behavior with csh, for example.
To answer your question about where the information comes from: your home directory comes from the variable $HOME (no m...
Get top n records for each group of grouped results
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Here is one way to do this, using UNION ALL (See SQL Fiddle with Demo). This works with two groups, if you have more than two groups, then you would need to specify the group number and add queries for each group:
(
select *
from mytable
where `group` = 1
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How do I check two or more conditions in one ?
...answered Dec 2 '11 at 11:44
olly_ukolly_uk
10.2k33 gold badges3737 silver badges4545 bronze badges
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twitter bootstrap navbar fixed top overlapping site
... everything is fine. However, when i try to switch it to navbar fixed top, all the other content on the site shifts up like the navbar isn't there and the navbar overlaps it. here's basically how i laid it out:
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What can you use Python generator functions for?
...in them. I want to know what types of problems that these functions are really good at solving.
16 Answers
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How to use mod operator in bash?
... answered Mar 31 '14 at 4:06
h__h__
81588 silver badges1818 bronze badges
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Get number days in a specified month using JavaScript? [duplicate]
...t with 1 instead of 0 as is normal with Javascript dates, because it's actually switching to the previous month because the day number is 0.
– Allan Wintersieck
Jul 15 '16 at 15:16
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What is the Java ?: operator called and what does it do?
... count = getHereCount(index);
else
count = getAwayCount(index);
It's called the conditional operator. Many people (erroneously) call it the ternary operator, because it's the only ternary (three-argument) operator in Java, C, C++, and probably many other languages. But theoretically there could...
How do I get the day of week given a date?
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Calendar math generally sucks because computers don't know what PTO is. In an effort to avoid teaching them I highly recommend obfuscating functions which determine whether it is currently a holiday or weekend.
– meawoppl...
What is “the inverse side of the association” in a bidirectional JPA OneToMany/ManyToOne association
...ms to be the owner of the orders.
But in the SQL world, one item will actually contain a pointer to the other. Since there is 1 customer for N orders, each order contains a foreign key to the customer it belongs to. This is the "connection" and this means the order "owns" (or literally contains) th...