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What is mattr_accessor in a Rails module?
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Rails extends Ruby with both mattr_accessor (Module accessor) and cattr_accessor (as well as _reader/_writer versions). As Ruby's attr_accessor generates getter/setter methods for instances, cattr/mattr_accessor provide getter/setter methods at the class or module level. Thus:
module Con...
Force point (“.”) as decimal separator in java
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Use the overload of String.format which lets you specify the locale:
return String.format(Locale.ROOT, "%.2f", someDouble);
If you're only formatting a number - as you are here - then using NumberFormat would probably be more appropriate. But if you need the rest of the formatting cap...
why does DateTime.ToString(“dd/MM/yyyy”) give me dd-MM-yyyy?
...ture date delimiter.
If you want to hard-code it to always use slash, you can do something like this:
DateTime.ToString("dd'/'MM'/'yyyy")
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How do I show a Save As dialog in WPF?
...on a button, gather some data and then put it in a text file that the user can download to their machine. I can get the first half of this, but how do you prompt a user with a "Save As" dialog box? The file itself will be a simple text file.
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Is there any way to view the currently mapped keys in Vim?
Basically, I'd like to view all of the keys maps made in the current buffer by all of plugins, vimrc, etc, in the current buffer. Is there anyway to do this?
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Java - Including variables within strings?
Ok, so we all should know that you can include variables into strings by doing:
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CocoaPods and GitHub forks
...ve pushed your changes to your fork, get the SHA of your last commit. You can do this using git rev-parse origin/master | pbcopy or on the GitHub commits page for your project:
Then, you can specify the specific commit on your fork in your Podfile like this:
pod 'TTTAttributedLabel', :git => ...
How to undo the effect of “set -e” which makes bash exit immediately if any command fails?
... shell, bash will exit immediately if any command exits with non-zero. How can I undo this effect?
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How does Spring autowire by name when more than one matching bean is found?
... you mean the name of the field which will contain the bean? (i.e. in this case country)
– Fund Monica's Lawsuit
Sep 17 '18 at 19:15
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Scaling Node.js
I'm fairly new to large-scale server-side development. I want to write a server using Node.js, but before I forge ahead I'd like to know what the general principles are for scaling node up to, say, 20 queries per second.
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