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Fully custom validation error message with Rails
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Now, the accepted way to set the humanized names and custom error messages is to use locales.
# config/locales/en.yml
en:
activerecord:
attributes:
user:
email: "E-mail address"
errors:
models:
user:
attributes:
e...
How to create directories recursively in ruby?
... file as /a/b/c/d.txt, but I do not know if any of these directories exist and need to recursively create them if necessary.
How can one do this in ruby?
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TypeError: 'NoneType' object is not iterable in Python
...al life other than making us insert few ugly if data is not None: kind of handling.
– nehem
Sep 1 '17 at 6:59
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C++ display stack trace on exception
... for more details.
On MSVC then you can use the StackWalker library that handles all of the underlying API calls needed for Windows.
You'll have to figure out the best way to integrate this functionality into your app, but the amount of code you need to write should be minimal.
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How can you zip or unzip from the script using ONLY Windows' built-in capabilities?
...his.
https://superuser.com/questions/201371/create-zip-folder-from-the-command-line-windows
From Windows 8 on, .NET Framework 4.5 is installed by default, with System.IO.Compression.ZipArchive and PowerShell available, one can write scripts to achieve this, see
https://stackoverflow.com/a/26843122/...
How to pass macro definition from “make” command line arguments (-D) to C source code?
I usually pass macro definitions from "make command line" to a "makefile" using the option :
-Dname=value. The definition is accessible inside the makefile.
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github locks up mac terminal when using pull command
I'm in the process of learning github on mac (command-line) and whenever I do git pull origin master i get this
8 Answers...
Why can't variable names start with numbers?
...names are "numbers+alpha that don't parse to a valid numeric designation", and that's just silly.
– eaolson
Oct 11 '09 at 3:56
4
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FragmentPagerAdapter Exists Only In Android.Support.V4.App (and not Android.App)
I cannot find find FragmentPagerAdapter within Android.App.
5 Answers
5
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Ruby: Can I write multi-line string with no concatenation?
...n, in that case (although it might depend on both the starting indentation and your final needs).
EDIT: Adding one more:
p %{
SELECT * FROM users
ORDER BY users.id DESC
}.gsub(/\s+/, " ").strip
# >> "SELECT * FROM users ORDER BY users.id DESC"
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