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What is getattr() exactly and how do I use it?
...ethod name.
For example, you cannot do this:
obj = MyObject()
for x in ['foo', 'bar']:
obj.x()
because x is not of the type builtin, but str. However, you CAN do this:
obj = MyObject()
for x in ['foo', 'bar']:
getattr(obj, x)()
It allows you to dynamically connect with objects based o...
Using bitwise OR 0 to floor a number
...and only an integer (as in the Elm source code @dwayne-crooks linked). And foo = foo | 0 could be used to coerce any value to an integer (where 32-bit numbers are truncated and all non-numbers become 0).
– David Michael Gregg
Jan 3 '18 at 11:31
...
JavaScript regex multiline flag doesn't work
...ipt 2018.
https://github.com/tc39/proposal-regexp-dotall-flag
const re = /foo.bar/s; // Or, `const re = new RegExp('foo.bar', 's');`.
re.test('foo\nbar');
// → true
re.dotAll
// → true
re.flags
// → 's'
share
...
Create list of single item repeated N times
... change one of them, they all change because they're all the same object:
foo = [[]] * 4
foo[0].append('x')
foo now returns:
[['x'], ['x'], ['x'], ['x']]
But with immutable objects, you can make it work because you change the reference, not the object:
>>> l = [0] * 4
>>> l[...
Good ways to manage a changelog using git?
...l create a "change log" containing lots of entries like "Fixed spelling of fooMethod in ZModule" and "Refactor XModule to use new version of XYLibarary". Your users don't care about that. They want to know what changes were made from their perspective as users, not your perspective as a developer. A...
Sharing Test code in Maven
...ency>
<groupId>com.myco.app</groupId>
<artifactId>foo</artifactId>
<version>1.0-SNAPSHOT</version>
<type>test-jar</type>
<scope>test</scope>
</dependency>
...
Why is Git better than Subversion?
...ty much the same. There isn't much difference between:
svn checkout svn://foo.com/bar bar
cd bar
# edit
svn commit -m "foo"
and
git clone git@github.com:foo/bar.git
cd bar
# edit
git commit -a -m "foo"
git push
Where Git really shines is branching and working with other people.
...
Should switch statements always contain a default clause?
...ome languages you can assign integer values to enums. In C++ enum MyEnum { FOO = 0, BAR = 1 }; MyEnum value = (MyEnum)2; makes a valid MyEnum instance that is not equal to FOO or BAR. If either of these issues would cause an error in your project, a default case will help you find the error very qui...
What is the JavaScript >>> operator and how do you use it?
...ey can be used on array-like objects e.g. Array.prototype.indexOf.call({0:'foo', 1:'bar', length: 2}, 'bar') == 1;. The arguments object is also a good example. For pure array objects, it's impossible to change the type of the length property, because they implement an special [[Put]] internal metho...
A KeyValuePair in Java [duplicate]
...t giving a new name to class and the two elements.
– foo
Jun 29 '17 at 17:48
1
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