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Install Node.js on Ubuntu
...ll the software-properties-common
package for the add-apt-repository command to work: sudo apt-get
install software-properties-common
As of Node.js v0.10.0, the nodejs package from Chris Lea's repo
includes both npm and nodejs-dev.
Don't give sudo apt-get install nodejs npm just sudo ap...
How to show first commit by 'git log'?
...’s initial commit, gitk, some initially separate tools, git-gui, gitweb, and git-p4). In this case, we know that e83c516 is the one we are probably interested in. It is both the earliest commit and a root commit.
It is not so simple in the general case.
Imagine that libfoo has been in developmen...
What is the difference between ~> and >= when specifying rubygem in Gemfile?
...constraint. RubyGems will increment the last digit in the version provided and use that until it reaches a maximum version. So ~>0.8.5 is semantically equivalent to:
gem "cucumber", ">=0.8.5", "<0.9.0"
The easy way to think about it is that you're okay with the last digit incrementing to ...
How to compare type of an object in Python?
...ty of details of why checking the type of an object is usually a bad idea, and what you probably should be doing instead.
– Jeff Shannon
Apr 2 '09 at 9:28
2
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How to return 2 values from a Java method?
...sider creating a class that represents the result that you want to return, and return an instance of that class. Give the class a meaningful name. The benefits of this approach over using an array are type safety and it will make your program much easier to understand.
Note: A generic Pair class, a...
How can I change the EditText text without triggering the Text Watcher?
...
You could unregister the watcher, and then re-register it.
Alternatively, you could set a flag so that your watcher knows when you have just changed the text yourself (and therefore should ignore it).
...
What is the best practice for making an AJAX call in Angular.js?
... returns a promise to the returned data, then call that in your controller and handle the promise there to populate your $scope property.
The Service
module.factory('myService', function($http) {
return {
getFoos: function() {
//return the promise directly.
retur...
Render basic HTML view?
...ade
include plain.html
in views/plain.html
<!DOCTYPE html>
...
and app.js can still just render jade:
res.render(index)
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How to initialize const member variable in a class?
...ion sums it up briefly:
A class is typically declared in a header file and a header file is typically included into many translation units. However, to avoid complicated linker rules, C++ requires that every object has a unique definition. That rule would be broken if C++ allowed in-class defini...
List comprehension rebinds names even after scope of comprehension. Is this right?
...change in Python
3, to improve equivalence between list
comprehensions and generator
expressions. In Python 2, the list
comprehension "leaks" the loop control
variable into the surrounding scope:
x = 'before'
a = [x for x in 1, 2, 3]
print x # this prints '3', not 'before'
This was ...