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How to pass arguments into a Rake task with environment in Rails? [duplicate]
...s.message}"
end
Updated per @Peiniau's comment below
As for Rails > 3.1
task :t, arg, :needs => [deps] # deprecated
Please use
task :t, [args] => [deps]
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Group by month and year in MySQL
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Mark Garcia
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answered Jul 29 '10 at 21:03
Mitch DempseyMitch De...
STL 算法 - C/C++ - 清泛网 - 专注C/C++及内核技术
STL 算法目录STL算法概述查找算法堆算法关系算法集合算法排列组合算法排序和通用算法删除和替换算法生成和变异算法算数算法STL算法概述简介:STL算法...
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STL算法概述
查找算法
堆算法
关系算法
集合算法
排列组合算...
Why would I ever use push_back instead of emplace_back?
...e Deduction in C++14. I start talking about push_back vs. emplace_back at 13:49, but there is useful information that provides some supporting evidence prior to that.
The real primary difference has to do with implicit vs. explicit constructors. Consider the case where we have a single argument tha...
Date query with ISODate in mongodb doesn't seem to work
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321
Although $date is a part of MongoDB Extended JSON and that's what you get as default with mong...
Given a DateTime object, how do I get an ISO 8601 date in string format?
...THH\\:mm\\:ss.fffffffzzz");
This gives you a date similar to 2008-09-22T13:57:31.2311892-04:00.
Another way is:
DateTime.UtcNow.ToString("o");
which gives you 2008-09-22T14:01:54.9571247Z
To get the specified format, you can use:
DateTime.UtcNow.ToString("yyyy-MM-ddTHH:mm:ssZ")
DateTime Fo...
Can one do a for each loop in java in reverse order?
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How to empty a list in C#?
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237
It's really easy:
myList.Clear();
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Zipping streams using JDK8 with lambda (java.util.stream.Streams.zip)
In JDK 8 with lambda b93 there was a class java.util.stream.Streams.zip in b93 which could be used to zip streams (this is illustrated in the tutorial Exploring Java8 Lambdas. Part 1 by Dhananjay Nene ). This function :
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What differences, if any, between C++03 and C++11 can be detected at run-time?
...amp;& in C++0x, and a conversion to int followed by logical-and in C++03
struct Y { bool x1, x2; };
struct A {
operator int();
template<typename T> operator T();
bool operator+();
} a;
Y operator+(bool, A);
bool isCpp0x() {
return sizeof(&A::operator int&& +a) == si...