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How to define custom configuration variables in rails
....custom_config_variable = :my_config_setting
To read the setting, simply call the configuration variable without setting it:
Rails.configuration.custom_config_variable
=> :my_config_setting
UPDATE Rails 4
In Rails 4 there a new way for this => http://guides.rubyonrails.org/configuring.ht...
What is the @Html.DisplayFor syntax for?
...tes, they're partial views that can be put in a DisplayTemplates folder inside the view folder associated to a controller.
Example:
If you create a view named String.cshtml inside the DisplayTemplates folder of your views folder (e.g Home, or Shared) with the following code:
@model string
@if ...
Change default app.config at runtime
... app.config (e.g. WCF configuration). Because the modules are loaded dynamically, I don't want to have these entries in the app.config file of my application.
What I would like to do is the following:
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DynamoDB vs MongoDB NoSQL [closed]
... so there's no need to use a database for this, that's the reason why I decided to choose a noSQL data storage.
8 Answers
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How to check if a specified key exists in a given S3 bucket using Java
... a lot more easier and robust than the AWS sdk. Using this library you can call, s3service.getObjectDetails(). This will check and retrieve only the details of the object (not the contents) of the object. It will throw a 404 if the object is missing. So you can catch that exception and deal with it ...
How to get a JavaScript object's class?
...[object CLASSNAME], which is the result of using Object.prototype.toString.call(value).
getAnyClass() behaves the same as getNativeClass(), but also supports custom constructors
function getNativeClass(obj) {
if (typeof obj === "undefined") return "undefined";
if (obj === null) return "null";
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What is a daemon thread in Java?
...
For posterity, setDamon(boolean) can only be called before the thread has been started. By default the thread inherits the daemon status of its parent thread.
– Gray
Nov 30 '11 at 13:47
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How can I open the interactive matplotlib window in IPython notebook?
... switch after having started with pylab=inline or pylab=qt, you get: This call to matplotlib.use() has no effect because the the backend has already been chosen; matplotlib.use() must be called before pylab, matplotlib.pyplot, or matplotlib.backends is imported for the first time.
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Clojure: reduce vs. apply
... happy to hear that! Re: sum, I'd say that Clojure has this function, it's called + and you can use it with apply. :-) Seriously speaking, I think in Lisp, in general, if a variadic function is provided, it's not usually accompanied by a wrapper operating on collections -- that's what you use apply ...
JdbcTemplate queryForInt/Long is deprecated in Spring 3.2.2. What should it be replaced by?
...Template are deprecated in Spring 3.2. I can't find out why or what is considered the best practice to replace existing code using these methods.
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