idioms

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Is there a better way to write this named_scope? [Rails]

I am using this named_scope to search for products that have a description matching any word the user inputs.[详细]

2023-01-15 02:49 分类：问答
How do I cache a method with Ruby/Rails?

I have an expensive (time-consuming) external request to another web service I need to make, and I\'d like to cache it. So I attempted to use this idiom, by putting the following in the application co[详细]

2023-01-14 07:59 分类：问答
x or y: acceptable idiom, or obfuscation?

I have to extract values from a variable that may be None, with some defaults in mind. I first wrote this code:[详细]

2023-01-13 15:00 分类：问答
Idiomatic way to store a single, "first-class" list in MongoDB?

I have a special list (a sort of queue, as in the data structure, not as in a work queue) that I want to store in MongoDB. I need to access and manipulate this single list often in my application - an[详细]

2023-01-12 05:07 分类：问答
Is returning nil from a [[class alloc] init] considered good practice?

And is it a common idiom in Objective-C. I\'ve only seen this used on [[NSImage alloc] initWithConten开发者_如何学JAVAtsOfFile: str] and it always make me think there is a memory leak, because i call[详细]

2023-01-11 13:24 分类：问答
New Styles in C#

Fluent APIs are very common these days. Lately, I\'m finding them in almost every system I work with. Mostly, they enhance readability but sometimes they lock me in to inflexible specifications, makin[详细]

2023-01-09 23:17 分类：问答
How to count non-null elements in an iterable?

I\'m looking for a bet开发者_开发技巧ter/more Pythonic solution for the following snippet count = sum(1 for e in iterable if e)[详细]

2023-01-09 18:58 分类：问答
Perl idiom for getting a maximum number of elements in an array

I wanted to chop off all but the first five elements of an array, so I stupidly did: @foo = @foo[ 0 .. 4 ];[详细]

2023-01-09 15:36 分类：问答
What's the point of "for x in y" in Ruby?

I\'m learning Ruby and RoR at the moment, and I came across this: <% for post in @posts %> in the Rails guide. I\'d understood that the idiomatic way to do this in Ruby is with:[详细]

2023-01-08 20:22 分类：问答
API design: is "fault tolerance" a good thing?

I\'ve consolidated many of the useful answers and came up with my own answer below For example, I am writing a an API Foo which needs explicit initialization and termination. (Should be language agno[详细]

2023-01-08 18:42 分类：问答