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Send string to stdin
...
This is coming from the stdin
EOF
or you can redirect output from a command, like
diff <(ls /bin) <(ls /usr/bin)
or you can read as
while read line
do
echo =$line=
done < some_file
or simply
echo something | read param
...
Null check in an enhanced for loop
...ecause an empty list won't fail.
If you get this list from somewhere else and don't know if it is ok or not you could create a utility method and use it like this:
for( Object o : safe( list ) ) {
// do whatever
}
And of course safe would be:
public static List safe( List other ) {
ret...
Why does Ruby 1.9.2 remove “.” from LOAD_PATH, and what's the alternative?
... "security" risk.
You can get around it by using absolute paths
File.expand_path(__FILE__) et al
or doing
require './filename' (ironically).
or by using
require_relative 'filename'
or adding an "include" directory
ruby -I . ...
or the same, using irb;
$irb -I .
...
Oracle “(+)” Operator
I am checking some old SQL Statements for the purpose of documenting them and probably enhancing them.
4 Answers
...
How do I check if a type provides a parameterless constructor?
...ou can check if you have a value type using the Type.IsValueType property, and create instances using Activator.CreateInstance(Type);
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Why use deflate instead of gzip for text files served by Apache?
What advantages do either method offer for html, css and javascript files served by a LAMP server. Are there better alternatives?
...
Why is “final” not allowed in Java 8 interface methods?
...ed” is not allowed in Java 8 interface methods?
The key thing to understand about default methods is that the primary design goal is interface evolution, not "turn interfaces into (mediocre) traits". While there's some overlap between the two, and we tried to be accommodating to the latter where...
Failed to build gem native extension (installing Compass)
...form the following:
1. Set Up Ruby Environment
Ensure ruby is installed and up to date: ruby -v
Update gem's sudo gem update --system
2. Set Up MAC Environment
Install the Xcode Command Line Tools this is the key to install Compass.
xcode-select --install
Installing the Xcode Command Line ...
Allow Google Chrome to use XMLHttpRequest to load a URL from a local file
...s.
I'm not aware of if this also works for local files, but let us know !
And mention, this does exactly what you expect, it disables the web security, so be careful with it.
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Using Python 3 in virtualenv
...irtualenv --no-site-packages python3.4' worked. --distribute is deprecated and -p doesn't seem necessary since virtualenv uses python3.
– alkopop79
Nov 10 '17 at 13:04
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