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Why does String.valueOf(null) throw a NullPointerException?
...ring.valueOf(Object)
String.valueOf(char[])
Java Specification Language mandates that in these kind of cases, the most specific overload is chosen:
JLS 15.12.2.5 Choosing the Most Specific Method
If more than one member method is both accessible and applicable to a method invocation, it is n...
How to specify the private SSH-key to use when executing shell command on Git?
... want to specify a private SSH-key to use when executing a shell (git) command from the local computer.
29 Answers
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bundle install fails with SSL certificate verification error
...icate verification error
gem update --system
My answer is still correct and left below for reference if that ends up not working for you.
Honestly the best temporary solution is to
[...] use the non-ssl version of rubygems in your gemfile as a temporary workaround.
via user Ownatik
wha...
What are the most-used vim commands/keypresses?
I'm a Ruby programming trying to switch from Textmate to MacVim, and I'm having trouble wading through the gargantuan lists of things you can do in VIM and all of the keypresses for them. I'm tired of hearing "You can use 'I' for inserting text, or 'a' for appending text after the character, or 'A' ...
What is a faster alternative to Python's http.server (or SimpleHTTPServer)?
...is a great way of serve the contents of the current directory from the command line:
13 Answers
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dynamically add and remove view to viewpager
...
After figuring out which ViewPager methods are called by ViewPager and which are for other purposes, I came up with a solution. I present it here since I see a lot of people have struggled with this and I didn't see any other relevant answers.
First, here's my adapter; hopefully comments ...
How to fix SSL certificate error when running Npm on Windows?
...
TL;DR - Just run this and don't disable your security:
Replace existing certs
# Windows/MacOS/Linux
npm config set cafile "<path to your certificate file>"
# Check the 'cafile'
npm config get cafile
or extend existing certs
Set this e...
Run ssh and immediately execute command [duplicate]
I'm trying to find UNIX or bash command to run a command after connecting to an ssh server. For example:
3 Answers
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Which terminal command to get just IP address and nothing else?
...
It says that -i and -I are both illegal options
– Mason
Dec 16 '11 at 3:08
3
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cannot download, $GOPATH not set
...ults to $HOME/go, but you may still find this useful if you want to understand the GOPATH layout, customize it, etc.]
The official Go site discusses GOPATH and how to lay out a workspace directory.
export GOPATH="$HOME/your-workspace-dir/" -- run it in your shell, then add it to ~/.bashrc or equiv...