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How can I get a JavaScript stack trace when I throw an exception?
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+100
Edit 2 (2017):
In all modern browsers you can simply call: console.trace(); (MDN Reference)
Edit 1 (2013):
A better (and simpler)...
Linux下部署企业级邮件服务器(postfix + dovecot + extmail) - 开源 & Gith...
...过程中常见问题的解决方法汇总。首先通过一幅图看看整个解决方案的原理：
当用户通过extmail登陆时，首先extmail先去通过mysql进行虚拟用户认证，当认证通过时，postfix通过Cyrus-SASL这个函数库，这个认证框架，结合Courier-authlib...
When to use PNG or JPG in iPhone development?
...ing UIImage:imageFromData when you want to display. The JPG data can be 10-100x smaller than the bitmap image data, but it allows you to get the (relatively slow) IO part out of the way early. Obviously be careful about how much data you cache/preload this way.
– Nigel Flack
...
Difference between two DateTimes C#?
...actual hour difference between the two dates. So if two dates differed by 100 years but occurred at the same time in the day, hours would return 0. But TotalHours will return the difference between in the total amount of hours that occurred between the two dates (876,000 hours in this case).
Th...
What is the difference between instanceof and Class.isAssignableFrom(…)?
...;
// return b instanceof A;
}
// Warmup the code
for (int i = 0; i < 100; ++i)
execute();
// Time it
int count = 100000;
final long start = System.nanoTime();
for(int i=0; i<count; i++){
execute();
}
final long elapsed = System.nanoTime() - start;
Thanks to the JIT, the code is opti...
How to easily resize/optimize an image size with iOS?
...autiful. I was able to trim down images sent to a server from about 1Mb to 100k while still maintaining retina-display resolution (though I changed the 320.0 and 480.0 values to 640.0 and 1136.0) and also did some JPEG compression after scaling: UIImageJPEGRepresentation(img, 0.7f);
...
What is a good Hash Function?
...e, i.e. all possible objects. This means that when hashing numbers between 100 and 1050 it's no good to let the most significant digit play a big part in the hash because for ~ 90% of the objects, this digit will be 0. It's far more important to let the last three digits determine the hash.
Similar...
How do you format the day of the month to say “11th”, “21st” or “23rd” (ordinal indicator)?
..., "st", "nd", "rd", "th", "th", "th", "th", "th", "th"};
int m = num % 100;
return String.valueOf(num) + suffix[(m > 3 && m < 21) ? 0 : (m % 10)];
}
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How to duplicate sys.stdout to a log file?
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+100
Since you're comfortable spawning external processes from your code, you could use tee itself. I don't know of any Unix system call...
Comparing two byte arrays in .NET
...ke longer to process than an unsafe comparison? Especially when your doing 1000's of comparisons?
– tcables
Jan 20 '11 at 18:18
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