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MongoDB drop every database
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I think when someone wants to drop their databases they aren't wanting to drop the mongo internal databases like admin and local.
– carlin.scott
Apr 21 '16 at 18:27
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Compare object instances for equality by their attributes
...e that in Python 2.5 and onwards, the class must define __eq__(), but only one of __lt__(), __le__(), __gt__(), or __ge__() is needed in addition to that. From that, Python can infer the other methods. See functools for more information.
– kba
Nov 19 '13 at 1:4...
Unresolved specs during Gem::Specification.reset:
...pec on its own. From what I understand, this means that you have more than one version of the listed gems installed on your system, and RSpec is unsure which one to use. After uninstalling older version of the gems, the warnings went away.
You can try:
gem cleanup lumberjack
Or:
gem list lumber...
What is the difference between tree depth and height?
... question from algorithms theory.
The difference between them is that in one case you count number of nodes and in other number of edges on the shortest path between root and concrete node.
Which is which?
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Correct way to convert size in bytes to KB, MB, GB in JavaScript
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var decimal = 3; // Change as required
var kiloBytes = marker; // One Kilobyte is 1024 bytes
var megaBytes = marker * marker; // One MB is 1024 KB
var gigaBytes = marker * marker * marker; // One GB is 1024 MB
var teraBytes = marker * marker * marker * marker; // One TB is 1024 ...
What does curly brackets in the `var { … } = …` statements do?
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They're both JavaScript 1.7 features. The first one is block-level variables:
let allows you to declare variables, limiting its scope to the block, statement, or expression on which it is used. This is unlike the var keyword, which defines a variable globally, or local...
Delete commits from a branch in Git
...asked for an already made commit. If you reset --hard, and check the log --oneline --all, the commits still remain in the tree. How do we delete these commits from tree? Thanks.
– iGbanam
Mar 17 '13 at 3:09
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Are static variables shared between threads?
...model and how writes become visible to threads. You can't count on changes one thread makes becoming visible to other threads in a timely manner (actually the JVM has no obligation to make those changes visible to you at all, in any time frame), unless you establish a happens-before relationship.
He...
Evenly space multiple views within a container view
...e extra top/bottom space constraints on your labels to superview; just the ones to the 'space views'. This will be satisfiable since the top and bottom constraints are on 'Space View 1' and 'Spacer View 4' respectively.
Duh 1: I duplicated my view and merely put it in landscape mode so you could se...
How to find unused images in an Xcode project?
Has anyone a one-line to find unused images in an Xcode project? (Assuming all the files are referenced by name in code or the project files - no code generated file names.)
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