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How do you calculate log base 2 in Java for integers?
I use the following function to calculate log base 2 for integers:
10 Answers
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Quickly create a large file on a Linux system
... This (fallocate) will also not work on a Linux ZFS filesystem - github.com/zfsonlinux/zfs/issues/326
– Joe
Nov 19 '13 at 1:51
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Java: Why is the Date constructor deprecated, and what do I use instead?
I come from the C# world, so not too experienced with Java yet. I was just told by Eclipse that Date was deprecated:
14 A...
Android- create JSON Array and JSON Object
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What happens when a computer program runs?
..., return addresses, return values, etc.
| | often grows downward, commonly accessed via "push" and "pop" (but can be
| | accessed randomly, as well; disassemble a program to see)
+---------+
| shared | mapped shared libraries (C libraries, math libs, etc.)
| libs |
+---------+...
How to timeout a thread
I want to run a thread for some fixed amount of time. If it is not completed within that time, I want to either kill it, throw some exception, or handle it in some way. How can it be done?
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Facebook API “This app is in development mode”
...ilable to the public.
STEP 1
Open Facebook developer account
https://www.facebook.com/login/?next=https%3A%2F%2Fdevelopers.facebook.com%2Fdocs%2Ffacebook-login%2Fios
STEP 2
Select your application
STEP 3
Click the app Review tab.
Change switch value no to yes. See picture below.
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Sending emails with Javascript
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You can use this free service: https://www.smtpjs.com
Include the script:
<script src="https://smtpjs.com/v2/smtp.js"></script>
Send an email using:
Email.send(
"from@you.com",
"to@them.com",
"This is a subject",
"this is the body",
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rsync: difference between --size-only and --ignore-times
...es -- the authoritative source is the rsync algorithm description: https://www.andrew.cmu.edu/course/15-749/READINGS/required/cas/tridgell96.pdf. The wikipedia article on rsync is also very good.
For local files, rsync compares metadata and if it looks like it doesn't need to copy the file because ...
How to check size of a file using Bash?
I've got a script that checks for 0-size, but I thought there must be an easier way to check for file sizes instead. I.e. file.txt is normally 100k; how to make a script check if it is less than 90k (including 0), and make it do wget a new copy because the file is corrupt in this case.
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