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Best way to add “current” class to nav in Rails 3
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I made a helper called nav_link:
def nav_link(link_text, link_path)
class_name = current_page?(link_path) ? 'current' : ''
content_tag(:li, :class => class_name) do
link_to link_text, link_path
end
end
used like:
nav_link '...
How to copy an object in Objective-C
...ssarily) a memory-identical clone of the original - the Objective C manual calls such an object "functionally independent" from it's original. Because the mechanisms for making these "intelligent" copies varies from class to class, we ask the objects themselves to perform them. This is the NSCopying...
Asynchronous shell exec in PHP
...sn't care at all about the output. The shell script makes a number of SOAP calls and is slow to complete, so I don't want to slow down the PHP request while it waits for a reply. In fact, the PHP request should be able to exit without terminating the shell process.
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.NET unique object identifier
...news, everyone!
The perfect tool for this job is built in .NET 4 and it's called ConditionalWeakTable<TKey, TValue>. This class:
can be used to associate arbitrary data with managed object instances much like a dictionary (although it is not a dictionary)
does not depend on memory addresses...
Generating a unique machine id
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A note to not do what I did, which was to call GetSystemFirmwareTable('RSMB'...); and hash the entire SMBIOSTableData buffer. It worked great until I ran into a workstation which wrote its cpu internal temperature to that table, meaning my unique id changed every fe...
Socket.io rooms difference between broadcast.to and sockets.in
...sts to all sockets in the given room, except to the socket on which it was called while io.sockets.in broadcasts to all sockets in the given room.
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CKEditor automatically strips classes from div
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I'm working with something called Kentico, which uses this editor. I've added the line "CKEDITOR.config.allowedContent = true;" to my config.js, but it is still reformatting my HTML, which breaks my Bootstrap code, anyone have any ideas?
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Check/Uncheck checkbox with JavaScript (jQuery or vanilla)?
... Using .prop doesn't seem to work with Jquery 1.11.2 in Firefox with locally hosted files. .attr does. I've not tested more fully. Here's the code: ``` personContent.find("[data-name='" + pass.name + "']").children('input').attr('checked', true); ```
– Andrew Downes
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How does JPA orphanRemoval=true differ from the ON DELETE CASCADE DML clause
... use uni-directional relationship, then the orphan will be removed automatically even though you don't set orphanRemoval=true
– Tim
Jan 9 '19 at 21:02
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JavaScript/jQuery to download file via POST with JSON data
...ed single-page webapp. It communicates with a RESTful web service via AJAX calls.
14 Answers
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