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Match whitespace but not newlines
... the aforementioned documentation section.
sub ws_not_nl {
local($_) = <<'EOTable';
0x0009 CHARACTER TABULATION h s
0x000a LINE FEED (LF) vs
0x000b LINE TABULATION vs [1]
0x000c FORM FEED (FF) vs
0x000d CARRIAGE RETURN (CR) ...
Rails: Using build with a has_one association in rails
...ignature is different for has_one and has_many associations.
class User < ActiveRecord::Base
has_one :profile
has_many :messages
end
The build syntax for has_many association:
user.messages.build
The build syntax for has_one association:
user.build_profile # this will work
user.prof...
Add margin above top ListView item (and below last) in Android
...nd of the layout (and not only to the edge of the padding).
An example:
<ListView
android:id="@+id/list_view"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:divider="@android:color/transparent"
android:dividerHeight="10.0sp"
android:paddi...
How can I tell PyCharm what type a parameter is expected to be?
... accessed by code:
>>> King.repress.__annotations__
{'peasant': <class '__main__.Person'>, 'return': <class 'bool'>}
Update: As of PEP 484, which has been accepted for Python 3.5, it is also the official convention to specify argument and return types using annotations.
...
Swift - How to convert String to Double
...ered Sep 29 '15 at 17:19
Paul SoltPaul Solt
7,41955 gold badges3737 silver badges4545 bronze badges
...
Setting dynamic scope variables in AngularJs - scope.
...t
model.assign($scope, 42);
// Apply it to the scope
// $scope.$apply(); <- According to comments, this is no longer needed
console.log($scope.life.meaning); // logs 42
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How can I “unuse” a namespace?
...is is a terrible idea. C++ headers are not intended to be included in an alternately namespace as was used here.
– Aaron
Oct 3 '08 at 18:06
23
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Get the key corresponding to the minimum value within a dictionary
...
For multiple keys which have equal lowest value, you can use a list comprehension:
d = {320:1, 321:0, 322:3, 323:0}
minval = min(d.values())
res = [k for k, v in d.items() if v==minval]
[321, 323]
An equivalent functional vers...
How to read last commit comment?
...ers, see: kernel.org/pub/software/scm/git/docs/… (scroll down to format:<string>).
– imme
Jul 31 '15 at 15:36
...
What is the fastest integer division supporting division by zero no matter what the result is?
...ible in C through using idiom. That is why it so hard to make a portable multiple precision integer library in C without resorting to (inline) assembly. My guess is that most decent compilers will understand the above idiom.
Another way of avoiding branches, as also remarked in some of the above co...