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Why use getters and setters/accessors?
What's the advantage of using getters and setters - that only get and set - instead of simply using public fields for those variables?
...
Is it possible to await an event instead of another async method?
... as a signal:
private SemaphoreSlim signal = new SemaphoreSlim(0, 1);
// set signal in event
signal.Release();
// wait for signal somewhere else
await signal.WaitAsync();
Alternatively, you can use an instance of the TaskCompletionSource<T> Class to create a Task<T> that represent...
reStructuredText tool support
...d a command-line tool that uses this library. It can read Markdown and (subsets of) reStructuredText, HTML, and LaTeX, and it can write Markdown, reStructuredText, HTML, LaTeX, ConTeXt, PDF, RTF, DocBook XML, OpenDocument XML, ODT, GNU Texinfo, MediaWiki markup, groff man pages, and S5 HTML slide sh...
Can (domain name) subdomains have an underscore “_” in it?
...ngs in case of labels that contain characters that are outside the allowed set.
In particular, it allows one to encode the _ in hostnames (Update 2017-07: This is doubtful, see comments. The _ still cannot be used in hostnames. Indeed, it cannot even be used in internationalized labels.)
The first...
Xcode warning: “Multiple build commands for output file”
... Navigator, select your Xcode Project file. This will show you the project settings as well as the targets in the project. Look in the "Copy Bundle Resources" Build Phase. You should find the offending files in that list twice. Delete the duplicate reference.
Xcode is complaining that you are tryi...
What techniques can be used to speed up C++ compilation times?
...oaded quickly to get a head start in compiling another file with that same set of headers.
Be careful that you only include rarely changed stuff in the precompiled headers, or you could end up doing full rebuilds more often than necessary. This is a good place for STL headers and other library incl...
The “unexpected ++” error in jslint [duplicate]
...
Ok, then you just need to set plusplus: false in your jslint options. That should disable that check.
– Sean Kinsey
Jun 8 '10 at 21:07
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What's the fastest way to do a bulk insert into Postgres?
...mptable.fieldname1
);
the same syntax to bulk updates:
UPDATE tablename
SET fieldname1=temptable.data
FROM (
SELECT UNNEST(ARRAY[1,2]) AS id,
UNNEST(ARRAY['a', 'b']) AS data
) AS temptable
WHERE tablename.id=temptable.id;
...
How to create a button programmatically?
...width: 100, height: 50))
button.backgroundColor = .greenColor()
button.setTitle("Test Button", forState: .Normal)
button.addTarget(self, action: #selector(buttonAction), forControlEvents: .TouchUpInside)
self.view.addSubview(button)
}
func buttonAction(sender: UIButton!) {
print("Button ...
How to read a large file - line by line?
...h performance parallel CSV file reads, but this tool is limited in feature set. I end up writing a lot of code to create data science pipelines before feeding to H2O cluster for the supervised learning proper.
I have been reading files like 8GB HIGGS dataset from UCI repo and even 40GB CSV files fo...