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How can I expose more than 1 port with Docker?
So I have 3 ports that should be exposed to the machine's interface. Is it possible to do this with a Docker container?
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What is mattr_accessor in a Rails module?
I couldn't really find this in Rails documentation but it seems like 'mattr_accessor' is the Module corollary for 'attr_accessor' (getter & setter) in a normal Ruby class .
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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 ne...
How do I show a Save As dialog in WPF?
I have a requirement in WPF/C# to click 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?
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You can always use String.format(....). i.e.,
String string = String.format("A String %s %2d", aStringVar, anIntVar);
I'm not sure if that is attractive enough for you, but it can be quite handy. The syntax is the same as for printf and java.util.For...
CocoaPods and GitHub forks
This is my first time forking a GitHub project, and I'm not too competent with CocoaPods either, so please bear with me.
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Rename master branch for both local and remote Git repositories
I have the branch master which tracks the remote branch origin/master .
15 Answers
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How to undo the effect of “set -e” which makes bash exit immediately if any command fails?
After entering set -e in an interactive bash 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?
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This is documented in section 3.9.3 of the Spring 3.0 manual:
For a fallback match, the bean name is considered a default qualifier value.
In other words, the default behaviour is as though you'd added @Qualifier("country") to the...