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Are the days of passing const std::string & as a parameter over?

...he said is because of cases like this. Let's say I have function A which calls function B, which calls function C. And A passes a string through B and into C. A does not know or care about C; all A knows about is B. That is, C is an implementation detail of B. Let's say that A is defined as follow...
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Convert UTC to local time in Rails 3

...mes. See them with: rake time:zones:us You can also run rake time:zones:all for all time zones. To see more zone-related rake tasks: rake -D time So, to convert to EST, catering for DST automatically: Time.now.in_time_zone("Eastern Time (US & Canada)") ...
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Cannot set content-type to 'application/json' in jQuery.ajax

...S header is used to find out if the request from the originating domain is allowed. Using fiddler, I added the following to the response headers from my server. Access-Control-Allow-Origin: * Access-Control-Allow-Headers: Content-Type Access-Control-Allow-Methods: POST, GET, OPTIONS Once the b...
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Automatically deleting related rows in Laravel (Eloquent ORM)

...(); static::deleting(function($user) { // before delete() method call this $user->photos()->delete(); // do the rest of the cleanup... }); } } You should probably also put the whole thing inside a transaction, to ensure the referential integrity...
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How to install packages using pip according to the requirements.txt file from a local directory?

... This works for me: $ pip install -r requirements.txt --no-index --find-links file:///tmp/packages --no-index - Ignore package index (only looking at --find-links URLs instead). -f, --find-links <URL> - If a URL or path to an html file, then par...
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C/C++ Struct vs Class

After finishing my C++ class it seemed to me the structs/classes are virtually identical except with a few minor differences. ...
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Java Synchronized Block for .class

What does this java code mean? Will it gain lock on all objects of MyClass ? 4 Answers ...
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resizes wrong; appears to have unremovable `min-width: min-content`

...scribed below is fixed as of Firefox 53 and the link to this answer has finally been removed from Bootstrap's documentation. Also, my sincere apologies to the Mozilla contributors who had to block removing support for -moz-document partly due to this answer. The fix In WebKit and Firefox 53+, you...
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How to suppress Pandas Future warning ?

... @bdiamante's answer may only partially help you. If you still get a message after you've suppressed warnings, it's because the pandas library itself is printing the message. There's not much you can do about it unless you edit the Pandas source code yoursel...
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Why would one use the Publish/Subscribe pattern (in JS/jQuery)?

... It’s all about loose coupling and single responsibility, which goes hand to hand with MV* (MVC/MVP/MVVM) patterns in JavaScript which are very modern in the last few years. Loose coupling is an Object-oriented principle in which ...