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How to calculate time in hours between two dates in iOS
How can I calculate the time elapsed in hours between two times (possibly occurring on different days) in iOS?
5 Answers
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Write bytes to file
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If I understand you correctly, this should do the trick. You'll need add using System.IO at the top of your file if you don't already have it.
public bool ByteArrayToFile(string fileName, byte[] byteArray)
{
try
{
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How to make graphics with transparent background in R using ggplot2?
I need to output ggplot2 graphics from R to PNG files with transparent background. Everything is ok with basic R graphics, but no transparency with ggplot2:
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How can I tell if my server is serving GZipped content?
...the conf file and now I'm trying to see if it works. YSlow says it's not, but 5 out of 6 websites that do the test say it is. How can I get a definite answer on this and why is there a difference in the results?
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What is the difference between SqlCommand.CommandTimeout and SqlConnection.ConnectionTimeout?
Is there any difference between SqlCommand.CommandTimeout and SqlConnection.ConnectionTimeout in .NET?
6 Answers
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MySql Table Insert if not exist otherwise update
It works if the datenum exists, but I want to insert this data as a new row if the datenum does not exist.
3 Answers
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Failure [INSTALL_FAILED_ALREADY_EXISTS] when I tried to update my application
when I tried to update my applcation with new version that has same signature as previous one, shows above error.
6 Answers...
Can mustache iterate a top-level array?
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You can do it like this...
Mustache.render('<ul>{{#.}}<li>{{.}}</li>{{/.}}</ul>', ['foo','bar','baz']);
It also works for things like this...
var obj = [{name: 'foo'}, {name: 'bar'}];
var tmp = '<...
Guava: Why is there no Lists.filter() function?
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It wasn't implemented because it would expose a perilous large number of slow methods, such as #get(index) on the returned List view (inviting performance bugs). And ListIterator would be a pain to implement as well (though I submitted a patch years a...
What are the differences between segment trees, interval trees, binary indexed trees and range trees
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All these data structures are used for solving different problems:
Segment tree stores intervals, and optimized for "which of these intervals contains a given point" queries.
Interval tree stores intervals as well, but optimized for "which o...