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Deleting queues in RabbitMQ
... tagged as 'administrator' in rabbit. (https://www.rabbitmq.com/management.html)
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PHP PDO: charset, set names?
...e over database's collation. dev.mysql.com/doc/refman/5.5/en/charset-table.html
– humble_wolf
Oct 7 '17 at 9:32
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Prevent browser from loading a drag-and-dropped file
I'm adding an html5 drag and drop uploader to my page.
10 Answers
10
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Rails migration for change column
...he documentation here: edgeguides.rubyonrails.org/active_record_migrations.html
– Aboozar Rajabi
Jan 20 '17 at 9:13
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Fastest way to duplicate an array in JavaScript - slice vs. 'for' loop
...g about blink browsers. Isn't blink just a layout engine, mainly affecting HTML rendering, and thus unimportant? I thought we'd rather talk about V8, Spidermonkey and friends here. Just a thing that confused me. Enlighten me, if I'm wrong.
– Neonit
Oct 30 '16 a...
How do I print out the contents of an object in Rails for easy debugging?
...post_controller.rb
def index
@posts = Post.all
end
#app/view/posts/index.html.erb
<%= debug(@posts) %>
#start your server
rails -s
results (in browser)
- !ruby/object:Post
raw_attributes:
id: 2
title: My Second Post
body: Welcome! This is another example post
published...
Why does Ruby 1.9.2 remove “.” from LOAD_PATH, and what's the alternative?
... (see, for example, http://www.faqs.org/faqs/unix-faq/faq/part2/section-13.html). I assume the Ruby folks have been persuaded of the wisdom of not doing that.
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Selectors in Objective-C?
...brary/archive/documentation/General/Conceptual/DevPedia-CocoaCore/Selector.html
A selector is the name used to select a method to execute for an object, or the unique identifier that replaces the name when the source code is compiled. A selector by itself doesn’t do anything. It simply identif...
Drop unused factor levels in a subsetted data frame
...rop in the forcats package http://forcats.tidyverse.org/reference/fct_drop.html.
It differs from droplevels in the way it deals with NA:
f <- factor(c("a", "b", NA), exclude = NULL)
droplevels(f)
# [1] a b <NA>
# Levels: a b <NA>
forcats::fct_drop(f)
# [1] a b <NA&g...
Can someone explain the dollar sign in Javascript?
...xplanation: http://www.vcarrer.com/2010/10/about-dollar-sign-in-javascript.html
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