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Mutable vs immutable objects
... were based upon mutable values. Those values changed outside the map and all of the hashing became obsolete. Theorists like to harp on this point, but in practice I haven't found it to be too much of an issue.
Another aspect is the logical "reasonability" of your code. This is a hard term to def...
Rails: Missing host to link to! Please provide :host parameter or set default_url_options[:host]
...default_url_options = { :host => "yourhost" }
That way, it can work in all environments and could be different from environment to environment. For example:
development.rb
config.action_mailer.default_url_options = { :host => "dev.yourhost.com" }
test.rb
config.action_mailer.default_url_...
How to change default timezone for Active Record in Rails?
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I have decided to compile this answer because all others seem to be incomplete.
config.active_record.default_timezone determines whether to use Time.local (if set to :local) or Time.utc (if set to :utc) when pulling dates and times from the database. The default is :...
Favicon: .ico or .png / correct tags? [duplicate]
...icon format do you recommend and why? I want it to be supported by IE7 and all the modern browsers.
3 Answers
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Catch paste input
... $(element).val();
// do something with text
}, 100);
});
Just a small timeout till .val() func can get populated.
E.
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How to make a div with no content have a width?
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a div usually needs at least a non-breaking space ( ) in order to have a width.
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When using Spring Security, what is the proper way to obtain current username (i.e. SecurityContext)
... {
SecurityContextHolder.setContext(securityContext);
}
}
And, finally, the production Spring config looks like this:
<bean id="myController" class="com.foo.FooController">
...
<constructor-arg index="1">
<bean class="com.foo.SecurityContextHolderFacade">
<...
Can multiple different HTML elements have the same ID if they're different elements?
...ntirely possible to have multiple elements with the same ID. It's not generally best practice, but it does have its occasional uses. Everyone seems to cite how would selectors work, well if your going in knowing you'll have conflicting IDs, you use your selectors with a parent, where the IDs under t...
What does the question mark operator mean in Ruby?
... Ajedi32 - Yeah I agree it's nice to name functions like that, I use is all the time. This might be super confusing for someone coming from Swift since the question mark there is used for nullable : )
– Jason
Dec 29 '15 at 19:51
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How to hide elements without having them take space on the page?
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not all items should be display: block, some will have to be set to display: inline (such as <span> or <a> or <img> DOM elements).
– Mauro
May 28 '10 at 12:00
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