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SQL query for today's date minus two months
... select all the records in a table where their date of entry is older then 2 months.
5 Answers
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Sort rows in data.table in decreasing order on string key `order(-x,v)` gives error on data.table 1.
...o longer necessary.
You can use DT[order(-rank(x), y)].
x y v
1: c 1 7
2: c 3 8
3: c 6 9
4: b 1 1
5: b 3 2
6: b 6 3
7: a 1 4
8: a 3 5
9: a 6 6
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Trying to understand CMTime and CMTimeMake
...are a numerator and denominator, so it is 1/10 of a second, not 1 second.
2) The result will be like CMTimeMake(2, 10), which is 2/10ths of a second.
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Map function in MATLAB?
...t your map function does for numeric arrays:
>> y = arrayfun(@(x) x^2, 1:10)
y =
1 4 9 16 25 36 49 64 81 100
There are two other built-in functions that behave similarly: cellfun (which operates on elements of cell arrays) and structfun (which operates on e...
Difference between JAX-WS, Axis2 and CXF
..., etc..., you need to use one of the alternatives like CXF or Metro or Axis2. It can also depend on what you are trying to integrate with. For example, CXF has top notch Spring support as well as very good OSGi support.
CXF also has other things besides just JAX-WS. It has a compliant JAX-RS i...
How to fix error with xml2-config not found when installing PHP from sources?
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All you need to do instal install package libxml2-dev for example:
sudo apt-get install libxml2-dev
On CentOS/RHEL:
sudo yum install libxml2-devel
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Default function arguments in Rust
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edited Mar 24 '19 at 21:20
answered Jun 5 '14 at 0:06
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List distinct values in a vector in R
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Do you mean unique:
R> x = c(1,1,2,3,4,4,4)
R> x
[1] 1 1 2 3 4 4 4
R> unique(x)
[1] 1 2 3 4
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Why does Razor _layout.cshtml have a leading underscore in file name?
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205
Razor was developed for ASP.NET Web Pages (WebMatrix), which doesn't have the same sort of pro...