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How to link Docker services across hosts?
...allows servers from multiple containers to connect to each other via links and service discovery . However, from what I can see this service discovery is host-local. I would like to implement a service that uses other services hosted on a different machine.
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What is the difference between ${var}, “$var”, and “${var}” in the Bash shell?
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Braces ($var vs. ${var})
In most cases, $var and ${var} are the same:
var=foo
echo $var
# foo
echo ${var}
# foo
The braces are only needed to resolve ambiguity in expressions:
var=foo
echo $varbar
# Prints nothing because there is no variable 'varbar'
echo ${var}bar...
Can PHP cURL retrieve response headers AND body in a single request?
Is there any way to get both headers and body for a cURL request using PHP? I found that this option:
13 Answers
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What are all codecs and formats supported by FFmpeg?
I need a list of codecs and formats supported by FFmpeg. Where can I find it?
4 Answers
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Generate colors between red and green for a power meter?
I'm writing a Java game and I want to implement a power meter for how hard you are going to shoot something.
19 Answers
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VIM Disable Automatic Newline At End Of File
So I work in a PHP shop, and we all use different editors, and we all have to work on windows. I use vim, and everyone in the shop keeps complaining that whenever I edit a file there is a newline at the bottom. I've searched around and found that this is a documented behavior of vi & vim... but I w...
Java: difference between strong/soft/weak/phantom reference
I have read this article about the topic, but I don't really understand it.
Please give me some advice along with examples when describing the concepts.
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Generate random password string with requirements in javascript
I want to generate a random string that has to have 5 letters from a-z and 3 numbers.
18 Answers
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How to encrypt/decrypt data in php?
I'm currently a student and I'm studying PHP, I'm trying to make a simple encrypt/decrypt of data in PHP. I made some online research and some of them were quite confusing(at least for me).
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How do I resolve “HTTP Error 500.19 - Internal Server Error” on IIS7.0 [closed]
...eb site directory, so it can't read config from there. Check the app pool and see what user it is configured to run as. Check the directory and see if that user has appropriate rights to it. While you're at it, check the event log and see if IIS logged any more detailed diagnostic information the...