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Rails: redirect_to with :error, but flash[:error] empty
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As stated in the Rails API only :notice and :alert are by default applied as a flash hash value. If you need to set the :error value, you can do it like this:
redirect_to show_path, flash: { error: "Insufficient rights!" }
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Pagination on a list using ng-repeat
... // needed for the pagination calc
// https://docs.angularjs.org/api/ng/filter/filter
return $filter('filter')($scope.data, $scope.q)
/*
// manual filter
// if u used this, remove the filter from html, remove above line and replace data with getData()
var...
How can I parse a string with a comma thousand separator to a number?
...mehow they managed to ship the spec with only a Intl.NumberFormat.format() API and no parse counterpart :(
The only way to parse a string with cultural numeric characters in it to a machine recognisable number in any i18n sane way is to use a library that leverages CLDR data to cover off all possib...
Getting the encoding of a Postgres database
..._database -c 'SHOW SERVER_ENCODING'
From within psql, an SQL IDE or an API:
SHOW SERVER_ENCODING
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passing 2 $index values within nested ng-repeat
...ion (see "Tracking and Duplicates" section of the docs: docs.angularjs.org/api/ng/directive/ngRepeat). The important point here is the "ng-init" - that is the correct way that the angular docs agree with.
– Rebecca
Feb 11 '16 at 19:17
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Generate Java classes from .XSD files…?
...nutes, try Simple XML Serialization. Don't spend hours learning the JAXB API
http://simple.sourceforge.net/download/stream/doc/tutorial/tutorial.php
However, if you are really keen on learning JAXB, here's an excellent tutorial
http://blogs.oracle.com/teera/entry/jaxb_for_simple_java_xml
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Center content of UIScrollView when smaller
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After removing all the iOS 3.2+ API calls, the centering logic only seems to work on devices with iOS 3.2+ and not 3.1.3 (jumpy, flickery, gets random offset). I've compared the outputs of frame origin and size between the 3.1.3 and 3.2+ and even though the...
How to detect responsive breakpoints of Twitter Bootstrap 3 using JavaScript?
...ion is still an experimental feature: developer.mozilla.org/en-US/docs/Web/API/DeviceOrientationEvent I suggest you to use .on('resize')
– mtt
Sep 2 '13 at 15:56
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从源代码剖析Mahout推荐引擎 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...，关于推荐算法的详细介绍，请参考文章：Mahout推荐算法API详解
7. 创建自己的推荐引擎构造器
有了上面的知识，我就清楚地知道了Mahout推荐引擎的原理和使用，我们就可以写一个自己的构造器，通过“策略模式”实现，算法...
Array versus List: When to use which?
... such optimizations tend to be highly local and not expose the mutation to API consumers.
– Eamon Nerbonne
Jul 18 '14 at 12:38
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