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Show which git tag you are on?
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336
Edit: Jakub Narębski has more git-fu. The following much simpler command works perfectly:
gi...
List comprehension in Ruby
...k.nil?
self.collect(&block).compact
end
end
some_array = [1, 2, 3, 4, 5, 6]
new_array = some_array.comprehend {|x| x * 3 if x % 2 == 0}
puts new_array
Prints:
6
12
18
I would probably just do it the way you did though.
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Intellij IDEA Java classes not auto compiling on save
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253
UPDATED
For IntelliJ IDEA 12+ releases we can build automatically the edited sources if we are ...
Java: method to get position of a match in a String?
...ward (or backward) starting at the specified index].
String text = "0123hello9012hello8901hello7890";
String word = "hello";
System.out.println(text.indexOf(word)); // prints "4"
System.out.println(text.lastIndexOf(word)); // prints "22"
// find all occurrences forward
for (int i = -1; (i = te...
Android Studio: Where is the Compiler Error Output Window?
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This answer is outdated. For Android 3.1 Studio go to this answer
One thing you can do is deactivate the external build. To do so click on "compiler settings icon" in the "Messages Make" panel that appears when you have an error. You can also open the compiler ...
Converting any string into camel case
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33 Answers
33
Active
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Easy idiomatic way to define Ordering for a simple case class
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153
My personal favorite method is to make use of the provided implicit ordering for Tuples, as it i...
Remove the last line from a file in Bash
...$ d' foo.txt
The -i option does not exist in GNU sed versions older than 3.95, so you have to use it as a filter with a temporary file:
cp foo.txt foo.txt.tmp
sed '$ d' foo.txt.tmp > foo.txt
rm -f foo.txt.tmp
Of course, in that case you could also use head -n -1 instead of sed.
MacOS:
On M...
How to set a Django model field's default value to a function call / callable (e.g., a date relative
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143
The question is misguided. When creating a model field in Django, you are not defining a functi...
Delete specific line number(s) from a text file using sed?
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384
If you want to delete lines 5 through 10 and 12:
sed -e '5,10d;12d' file
This will print th...