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Heroku/devise - Missing host to link to! Please provide :host parameter or set default_url_options[:
......
You should check the logs on the heroku server heroku logs run that from the console and it will tell you the exact error.
When you push to heroku you need to configure the environment.rb file with the heroku subdomain:
config.action_mailer.default_url_options = { :host => 'yourapp.herok...
Force IE compatibility mode off using tags
... <p>Content goes here.</p>
</body>
</html>
From the linked MSDN page:
Edge mode tells Windows Internet Explorer to display content in the highest mode available, which actually breaks the “lock-in” paradigm. With Internet Explorer 8, this is equivalent to IE8 ...
Dynamic variable names in Bash
...able indirection is introduced. Bash uses the value of the variable formed from the rest of parameter as the name of the variable; this variable is then expanded and that value is used in the rest of the substitution, rather than the value of parameter itself.
– Yorik.sar
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decorators in the python standard lib (@deprecated specifically)
...
Here's some snippet, modified from those cited by Leandro:
import warnings
import functools
def deprecated(func):
"""This is a decorator which can be used to mark functions
as deprecated. It will result in a warning being emitted
when the fu...
How can I find the method that called the current method?
...(new System.Diagnostics.StackTrace()).GetFrame(1).GetMethod().Name
It is from Get Calling Method using Reflection [C#].
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Generate an integer that is not among four billion given ones
...om candidates and iterates through the known integers, eliminating matches from the candidates, it is all but certain to find at least one integer that is not in the file.
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The tilde operator in C
... in the ELF hashing algorithm, and I'm curious what it does. (The code is from Eternally Confused .)
6 Answers
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How to check if a string is a valid hex color representation?
...-> match beginning
# -> a hash
[0-9A-F] -> any integer from 0 to 9 and any letter from A to F
{6} -> the previous group appears exactly 6 times
$ -> match end
i -> ignore case
If you need support for 3-character HEX codes, use the following:
/...
What is the difference between “Include Directories” and “Additional Include Directories”
...UDE PATHS
VC++ Directories: Include Directories
this value is inherited from the INCLUDE Windows environment variable which is defined outside of Visual Studio
environment variables can be: global to the computer or have user level scope
The INCLUDE and LIB environment variables are created whe...
Maven: best way of linking custom external JAR to my project?
...ur local repository with the library jars then you should change the scope from system to compile.
If you are starting with maven I suggest to use maven directly not IDE plugins as it adds an extra layer of complexity.
As for the error, do you put the required jars on your classpath? If you are us...