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What is thread contention?
...e a lock is one type of thing that there can be contention over, it is far from the only such thing. There can be contention for lockless resources as well. (For example, if two threads keep atomically incrementing the same integer, they may experience contention due to cache ping-ponging. No locks ...
How to create abstract properties in python abstract classes
...I create a base abstract class Base . I want all the classes that inherit from Base to provide the name property, so I made this property an @abstractmethod .
...
How to convert a table to a data frame
...rs, another way I've used is data.frame(rbind(mytable)). Using the example from @X.X:
> freq_t = table(cyl = mtcars$cyl, gear = mtcars$gear)
> freq_t
gear
cyl 3 4 5
4 1 8 2
6 2 4 1
8 12 0 2
> data.frame(rbind(freq_t))
X3 X4 X5
4 1 8 2
6 2 4 1
8 12 0 2
If t...
How to clear https proxy setting of NPM?
... is not covered properly.
By running npm config rm proxy you remove proxy from user configuration. This can be easily verified by running: npm config list.
If there is proxy or https-proxy setting set in global config you have to use --global in the command to remove it.
So at the end this will cle...
How do I declare class-level properties in Objective-C?
... by apple and also improves readability since returning/setting self.value from the getter/setter causes infinite recursion. In my opinion this is the right answer.
– Peter Segerblom
May 2 '14 at 12:14
...
Amazon SimpleDB vs Amazon DynamoDB
...This is addressed by the respective FAQ Q: How does Amazon DynamoDB differ from Amazon SimpleDB? Which should I use? (hash link no longer works, but use in-page Find to locate question within page) to some extent already, with the most compact summary at the end of the paragraph:
While SimpleDB ...
Alternate FizzBuzz Questions [closed]
...ate a remainder (given a numerator and denominator)
Return distinct values from a list including duplicates (i.e. "1 3 5 3 7 3 1 1 5" -> "1 3 5 7")
Return distinct values and their counts (i.e. the list above becomes "1(3) 3(3) 5(2) 7(1)")
Given a string of expressions (only variables, +, and -) ...
HTML: Include, or exclude, optional closing tags?
...not contain block-level elements, and <P> is a block level element. From (w3.org/TR/REC-html40/struct/text.html#edef-P) "The P element represents a paragraph. It cannot contain block-level elements (including P itself)."
– Ian Boyd
Jun 9 '10 at 20:25
...
API to automatically upload apk to Google Play? [closed]
...ny channel (ie. alpha, beta...) or update title and description and more.
From the docs:
Uploading new versions of an app Releasing apps, by assigning APKs to various Tracks (alpha, beta, staged rollout, or production)
Creating and modifying Google Play Store listings, including
localiz...
How to tell if a tag failed to load
...it should be ok to only support this on next gen browsers for KISS IMHO).
From the spec:
If the src attribute's value is the
empty string or if it could not be
resolved, then the user agent must
queue a task to fire a simple event
named error at the element, and
abort these steps.
~...