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Fastest way to list all primes below N
...ratosthenes,
sundaram3,
sieve_wheel_30,
ambi_sieve (requires numpy)
primesfrom3to (requires numpy)
primesfrom2to (requires numpy)
Many thanks to stephan for bringing sieve_wheel_30 to my attention.
Credit goes to Robert William Hanks for primesfrom2to, primesfrom3to, rwh_primes, rwh_primes1, and ...
How can I wait till the Parallel.ForEach completes
...l, Parallel.Foreach() will wait until all its branched tasks are complete. From the calling thread you can treat it as a single synchronous statement and for instance wrap it inside a try/catch.
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How to redirect output of an entire shell script within the script itself?
...utput everything in the code block can then be redirected (See Example 3-2 from that link). Also note that curly braces do not launch a subshell, but similar I/O redirects can be done with subshells using parentheses.
– chris
May 16 '16 at 21:54
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Is it possible to have multiple styles inside a TextView?
...: (Thanks to Mark again!)
mBox = new TextView(context);
mBox.setText(Html.fromHtml("<b>" + title + "</b>" + "<br />" +
"<small>" + description + "</small>" + "<br />" +
"<small>" + DateAdded + "</small>"));
For an unoffici...
Using two values for one switch case statement
...ys = "
+ numDays);
}
}
This is the output from the code:
Number of Days = 29
FALLTHROUGH:
Another point of interest is the break statement. Each break statement
terminates the enclosing switch statement. Control flow continues with
the first statement foll...
How can you escape the @ character in javadoc?
...
Just write it as an HTML entity:
&#064;
From the document "javadoc - The Java API Documentation Generator"
If you want to start a line with the @ character and not have it be interpreted, use the HTML entity @.
This implies that you can use HTML entities for any ...
Why is exception.printStackTrace() considered bad practice?
...discards all data written to it, as is the case of /dev/null.
Inferring from the above, invoking Throwable.printStackTrace() constitutes valid (not good/great) exception handling behavior, only
if you do not have System.err being reassigned throughout the duration of the application's lifetime,...
Byte[] to InputStream or OutputStream
...ByteArrayInputStream bis = new ByteArrayInputStream(source);
// read bytes from bis ...
ByteArrayOutputStream bos = new ByteArrayOutputStream();
// write bytes to bos ...
byte[] sink = bos.toByteArray();
Assuming that you are using a JDBC driver that implements the standard JDBC Blob interface (n...
Android. Fragment getActivity() sometimes returns null
...agment manager already has this fragment's instance and you need to get it from fragment manager and pass it to the adapter.
UPDATE
Also, it is a good practice when using fragments to check isAdded before getActivity() is called. This helps avoid a null pointer exception when the fragment is detac...
How to screenshot website in JavaScript client-side / how Google did it? (no need to access HDD) [du
...nch of different more rare CSS3 properties. You'll find out that it is far from 100% either and unless you want to do it natively with just Javascript, it currently is the only option to go with.
– Niklas
Aug 26 '11 at 14:46
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