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How to return an empty ActiveRecord relation?
If I have a scope with a lambda and it takes an argument, depending on the value of the argument, I might know that there will not be any matches, but I still want to return a relation, not an empty array:
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How to set a stroke-width:1 on only certain sides of SVG shapes?
...ke then you can also use stroke-dasharray to do this, by making the dashes and gaps match up with the sides of the rectangle.
rect { fill: none; stroke: black; }
.top { stroke-dasharray: 0,50,150 }
.left { stroke-dasharray: 150,50 }
.bottom { stroke-dasharray: 100,50 }
.right { stroke-dasha...
When do I use a dot, arrow, or double colon to refer to members of a class in C++?
...ing that C++ has three ways to refer to members of a class: a::b , a.b , and a->b . When do I use which one of these operators?
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Undocumented NSURLErrorDomain error codes (-1001, -1003 and -1004) using StoreKit
I'm writing StoreKit-related code, and I'm getting some rather troubling error codes when I try to add a purchase to the queue.
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What is in your .vimrc? [closed]
Vi and Vim allow for really awesome customization, typically stored inside a .vimrc file. Typical features for a programmer would be syntax highlighting, smart indenting and so on.
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How to calculate the number of occurrence of a given character in each row of a column of strings?
... Sorry I was unclear. I was actually responding to tim riffe and telling him that his function threw an error with the problem posed. He may have used your redefinition of the problem but he didn't say so.
– IRTFM
Sep 14 '12 at 20:14
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Which kind of pointer do I use when?
...wrote C++ for a living, std::auto_ptr was all the std lib had available, and boost::shared_ptr was all the rage. I never really looked into the other smart pointer types boost provided. I understand that C++11 now provides some of the types boost came up with, but not all of them.
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How to save a git commit message from windows cmd?
I run git from the command line.
6 Answers
6
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apache to tomcat: mod_jk vs mod_proxy
What are the advantages and disadvantages of using mod_jk and mod_proxy for fronting a tomcat instance with apache?
3 A...
d3 axis labeling
...eight - 6)
.text("income per capita, inflation-adjusted (dollars)");
And the y-axis label like this:
svg.append("text")
.attr("class", "y label")
.attr("text-anchor", "end")
.attr("y", 6)
.attr("dy", ".75em")
.attr("transform", "rotate(-90)")
.text("life expectancy (ye...