大约有 45,000 项符合查询结果（耗时：0.0600秒） [XML]
Rails.env vs RAILS_ENV
...
According to the docs, #Rails.env wraps RAILS_ENV:
# File vendor/rails/railties/lib/initializer.rb, line 55
def env
@_env ||= ActiveSupport::StringInquirer.new(RAILS_ENV)
end
But, look at specifically how it's wrapped, using ActiveSupport::String...
Imitate Facebook hide/show expanding/contracting Navigation Bar
...
@PedroRomão great answer.
– Gagan_iOS
Dec 20 '16 at 8:01
add a comment
|
...
What's the state of the art in email validation for Rails?
...ou are interested, please write me on the github project : hallelujah/valid_email
– Hallelujah
May 19 '14 at 9:01
add a comment
|
...
Cross compile Go on OSX?
...al/go/src
then compile the Go compiler:
sudo GOOS=windows GOARCH=386 CGO_ENABLED=0 ./make.bash --no-clean
You need to repeat this step for each OS and Architecture you wish to cross compile by changing the GOOS and GOARCH parameters.
If you are working in user mode as I do, sudo is needed beca...
Disable messages upon loading a package
...The R Foundation for Statistical Computing
ISBN 3-900051-07-0
Platform: x86_64-pc-linux-gnu (64-bit)
[...]
R> suppressMessages(library(ROCR))
R> # silently loaded
R> search()
[1] ".GlobalEnv" "package:ROCR" # it's really there...
Mac OS X - EnvironmentError: mysql_config not found
...rror, well, there are a few things you could try:
Try running which mysql_config from bash. It probably won't be found. That's why the build isn't finding it either. Try running locate mysql_config and see if anything comes back. The path to this binary needs to be either in your shell's $PATH env...
Find what filetype is loaded in vim
...und this from the ever helfpul vim site. http://vim.wikia.com/wiki/Forcing_Syntax_Coloring_for_files_with_odd_extensions
Adding the below to your .vimrc works
au BufRead,BufNewFile *.ipy set filetype=python
share
...
How can I switch my git repository to a particular commit
...anch (locally):
With the commit hash (or part of it)
git checkout -b new_branch 6e559cb
or to go back 4 commits from HEAD
git checkout -b new_branch HEAD~4
Once your new branch is created (locally), you might want to replicate this change on a remote of the same name: How can I push my chang...
How does setting baselineAligned to false improve performance in LinearLayout?
...s the invisible line letters in text sit on. en.wikipedia.org/wiki/Baseline_%28typography%29
– Zsolt Safrany
Sep 29 '12 at 12:26
12
...
Redirect STDERR / STDOUT of a process AFTER it's been started, using command line?
...w copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Attaching to process 5636
Reading symbols from /usr/bin/tail...(no debugging symbols found)...done.
Reading symbols from /lib/librt.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/librt.so....