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How to find the size of an array in postgresql
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112
As vyegorov mentioned, array_length will do the trick. Or if you know that the array is 1-dim...
Return type of '?:' (ternary conditional operator)
.... This is its value category. (This is somewhat of a simplification, in C++11 we have lvalues, xvalues and prvalues.)
In very broad and simple terms, an lvalue refers to an object in memory and an rvalue is just a value that may not necessarily be attached to an object in memory.
An assignment expre...
Rails check if yield :area is defined in content_for
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answered Mar 11 '10 at 22:05
gudleikgudleik
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How can I get the intersection, union, and subset of arrays in Ruby?
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answered Apr 15 '11 at 14:28
Mike LewisMike Lewis
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How do I revert master branch to a tag in git?
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edited Apr 11 '13 at 8:07
answered Jul 29 '11 at 11:31
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Equivalent of “continue” in Ruby
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112
next
also, look at redo which redoes the current iteration.
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How to change line width in ggplot?
...hjust = 0.5, vjust = 0.2)) +
theme(strip.text.y = element_text(size = 11, hjust = 0.5,
vjust = 0.5, face = 'bold'))
and with size = 2
Figure29 +
geom_line(aes(group=factor(tradlib)),size=2) +
facet_grid(regionsFull~., scales="free_y") +
scale_colour_brewer(ty...
powershell 2.0 try catch how to access the exception
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stejstej
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add a co...
SQL join on multiple columns in same tables
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Paul McLoughlinPaul McLoughlin
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add a comme...
How can you escape the @ character in javadoc?
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answered Dec 11 '11 at 11:11
Bohemian♦Bohemian
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