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Query EC2 tags from within instance
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You can use a combination of the AWS metadata tool (to retrieve your instance ID) and the new Tag API to retrieve the tags for the current instance.
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Passing just a type as a parameter in C#
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There are two common approaches. First, you can pass System.Type
object GetColumnValue(string columnName, Type type)
{
// Here, you can check specific types, as needed:
if (type == typeof(int)) { // ...
This would be called li...
How do I read configuration settings from Symfony2 config.yml?
...e it in a parameters entry:
parameters:
contact_email: somebody@gmail.com
You should find the call you are making within your controller now works.
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Set title background color
...encoding="utf-8"?>
<TextView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/myTitle"
android:text="This is my new title"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:textColor="@color/titletextcolor"
/>
res/valu...
What does “abstract over” mean?
...n the last 2 lines you take advantage of the fact that the Sum and Product companion objects, because they define apply(Int), are treated as Int => Sum and Int => Product by the Scala compiler. Very nice!
– Kris Nuttycombe
Jan 23 '11 at 5:05
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How do you specify a different port number in SQL Management Studio?
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127.0.0.1,6283
Add a comma between the ip and port
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How to write multiple line string using Bash with variables?
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The syntax (<<<) and the command used (echo) is wrong.
Correct would be:
#!/bin/bash
kernel="2.6.39"
distro="xyz"
cat >/etc/myconfig.conf <<EOL
line 1, ${kernel}
line 2,
line 3, ${distro}
line 4 line
...
EOL
cat /etc/myconfig.conf
Th...
MySQL CONCAT returns NULL if any field contain NULL
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129
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Inheriting class methods from modules / mixins in Ruby
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A common idiom is to use included hook and inject class methods from there.
module Foo
def self.included base
base.send :include, InstanceMethods
base.extend ClassMethods
end
module InstanceMethods
def bar1
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Is there a command like “watch” or “inotifywait” on the Mac?
... event about any change to that directory is received, the specified
shell command is executed by /bin/bash
If you're on GNU/Linux,
inotifywatch (part of the
inotify-tools package on most distributions) provides similar
functionality.
Update: fswatch can now be used across many platforms including...