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How do you build a Singleton in Dart?
...ew keyword suggests that the class is instantiated, which it isn't. I'd go for a static method get() or getInstance() like I do in Java.
– Steven Roose
Jan 24 '14 at 16:26
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Counting the Number of keywords in a dictionary in python
... way to count the number of keywords or is there another way I should look for distinct words?
5 Answers
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Handling an empty UITableView. Print a friendly message
...u also need to make a special cell that has the empty message. Also don't forget that you need to probably change the height of your cell to accommodate the empty message. This is all doable but it seems like band-aid on top of band-aid.
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How can I get a precise time, for example in milliseconds in Objective-C?
...to calculate millisecond time accuracy, you can do:
// Get a current time for where you want to start measuring from
NSDate *date = [NSDate date];
// do work...
// Find elapsed time and convert to milliseconds
// Use (-) modifier to conversion since receiver is earlier than now
double timePassed_...
Can you run GUI applications in a Docker container?
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This will create a Docker container running VNC with the password 1234:
For Docker version 18 or newer:
docker run -p 5900:5900 -e HOME=/ creack/firefox-vnc x11vnc -forever -usepw -create
For Docker version 1.3 or newer:
docker run -p 5900 -e HOME=/ creack/firefox-vnc x11vnc -forever -usepw -...
Python Threading String Arguments
...=None, args=(), kwargs={}, *, daemon=None)
args is the argument tuple for the target invocation. Defaults to ().
Second, A quirk in Python about tuple:
Empty tuples are constructed by an empty pair of parentheses; a tuple with one item is constructed by following a value with a comma (it ...
Can Objective-C switch on NSString?
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Unfortunately they cannot. This is one of the best and most sought after utilizations of switch statements, so hopefully they hop on the (now) Java (and others) bandwagon!
If you are doing card names, perhaps assign each card ...
Best practices with STDIN in Ruby?
... virtual file concatenating all of the inputs, rather than the line number for each individual file.
– Alec Jacobson
Nov 14 '16 at 14:06
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List comprehension: Returning two (or more) items for each item
Is it possible to return 2 (or more) items for each item in a list comprehension?
6 Answers
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How to exit in Node.js
...ven have to have anything to do with web servers at all! It's just a host for some JavaScript, with some nifty built-in libraries for doing useful things.
– Brad
Sep 20 '12 at 14:22
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