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MPICH vs OpenMPI
Can someone elaborate the differences between the OpenMPI and MPICH implementations of MPI ?
Which of the two is a better implementation ?
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Should I return a Collection or a Stream?
...d collection will be. It depends on whether the result changes over time, and how important consistency of the returned result is. And it depends very much on how the user is likely to use the answer.
First, note that you can always get a Collection from a Stream, and vice versa:
// If API returns...
How to send a header using a HTTP request through a curl call?
... answered Oct 7 '13 at 5:15
Randhi RupeshRandhi Rupesh
10.9k66 gold badges2323 silver badges4444 bronze badges
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Reading/writing an INI file
Is there any class in the .NET framework that can read/write standard .ini files:
16 Answers
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What is a stream?
...n a stream:
read one byte. Next time you read, you'll get the next byte, and so on.
read several bytes from the stream into an array
seek (move your current position in the stream, so that next time you read you get bytes from the new position)
write one byte
write several bytes from an array into...
Using awk to remove the Byte-order mark
... So: awk '{if(NR==1)sub(/^\xef\xbb\xbf/,"");print}' INFILE > OUTFILE and make sure INFILE and OUTFILE are different!
– Steve Clay
Feb 12 '10 at 20:30
1
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When using Spring Security, what is the proper way to obtain current username (i.e. SecurityContext)
...iest way is:
@RequestMapping(method = RequestMethod.GET)
public ModelAndView showResults(final HttpServletRequest request, Principal principal) {
final String currentUser = principal.getName();
}
share
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What is the difference between YAML and JSON?
What are the differences between YAML and JSON, specifically considering the following things?
13 Answers
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Addition for BigDecimal
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I can understand the confusion. Even though it's stated that BigDecimal is immutable, the documentation could be better. For example, the docs state for method add(..): "augend - value to be added to this BigDecimal.". Furthermore, saying...
How to read a large file line by line?
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You can use the fgets() function to read the file line by line:
$handle = fopen("inputfile.txt", "r");
if ($handle) {
while (($line = fgets($handle)) !== false) {
// process the line read.
}
fclose($handle);
} else {
// error opening the file.
}
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