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Best way to test SQL queries [closed]
...compose a complicated query.
In the example, because each view adds only one transformation, each can be independently tested to find errors, and the tests are simple.
Here's the base table in the example:
create table month_value(
eid int not null, month int, year int, value int );
This...
Can we call the function written in one JavaScript in another JS file?
Can we call the function written in one JS file in another JS file? Can anyone help me how to call the function from another JS file?
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Difference between a Structure and a Union
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With a union, you're only supposed to use one of the elements, because they're all stored at the same spot. This makes it useful when you want to store something that could be one of several types. A struct, on the other hand, has a separate memory location for each ...
What is “2's Complement”?
...-byte of 4 bits (we'll call it a nibble - 1/2 a byte).
0000 - zero
0001 - one
0010 - two
0011 - three
0100 to 0111 - four to seven
That's as far as we can go in positives. 23-1 = 7.
For negatives:
1111 - negative one
1110 - negative two
1101 - negative three
1100 to 1000 - negative four to negati...
Java ArrayList - how can I tell if two lists are equal, order not mattering?
...it would be something like:
public boolean equalLists(List<String> one, List<String> two){
if (one == null && two == null){
return true;
}
if((one == null && two != null)
|| one != null && two == null
|| one.size() != two.s...
How to correctly close a feature branch in Mercurial?
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One way is to just leave merged feature branches open (and inactive):
$ hg up default
$ hg merge feature-x
$ hg ci -m merge
$ hg heads
(1 head)
$ hg branches
default 43:...
feature-x 41:...
(2 branches)
$ hg b...
How do I migrate a model out of one django app and into a new one?
I have a django app with four models in it. I realize now that one of these models should be in a separate app. I do have south installed for migrations, but I don't think this is something it can handle automatically. How can I migrate one of the models out of the old app into a new one?
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asynchronous vs non-blocking
...ndustry.
For example in the classic sockets API, a non-blocking socket is one that simply returns immediately with a special "would block" error message, whereas a blocking socket would have blocked. You have to use a separate function such as select or poll to find out when is a good time to retry...
Linq code to select one item
I find myself writing a lot of code like this to select one item that matches
7 Answers
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How to keep one variable constant with other one changing with row in excel
Lets say I have one cell A1, which I want to keep constant in a calculation. For example, I want to calculate a value like this:
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