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Saving enum from select in Rails 4.1
...;/option>
</select>
Values went from "0" to "red" and now we're all set.
If you're using a regular ol' rails text_field it's:
f.select :color, Wine.colors.keys.to_a
If you want to have clean human-readable attributes you can also do:
f.select :color, Wine.colors.keys.map { |w| [w...
Count number of rows within each group
..., there is no need to rename each variable in by= like list(year=df1$year) etc. A data.frame is a list already so aggregate(df1[c("Count")], by=df1[c("Year", "Month")], FUN=sum, na.rm=TRUE) will work.
– thelatemail
Jul 17 '19 at 22:27
...
What is the point of a private pure virtual function?
...c function, you could put some common things (such as logging, statistics, etc.) in the beginning and in the end of the function and then, "in the middle" to call this private virtual function, that will be different for the specific derived class. Something like:
class Base
{
// ..
public:
...
What does the Java assert keyword do, and when should it be used?
... try to trap, log, or retry/recover from OutOfMemoryError, AssertionError, etc.
– Aleksandr Dubinsky
Jun 16 '16 at 21:39
1
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How to play a notification sound on websites?
.../div>
Browser support
<audio> (Modern browsers)
<embed> (Fallback)
Codes used
MP3 for Chrome, Safari and Internet Explorer.
OGG for Firefox and Opera.
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jQuery validate: How to add a rule for regular expression validation?
... || re.test(value);
},
"Please check your input."
);
now all you need to do to validate against any regex is this:
$("#Textbox").rules("add", { regex: "^[a-zA-Z'.\\s]{1,40}$" })
Additionally, it looks like there is a file called additional-methods.js that contains the method "pa...
Java JDBC - How to connect to Oracle using Service Name instead of SID
...elped me resolve the issue I was struggling with for days. I looked around all over the internet until I found the answered by Jim Tough on May 18 '11 at 15:17. With that answer I was able to connect. Now I want to give back and help others with a complete example. Here goes:
import java.sql.*;
p...
Why, Fatal error: Class 'PHPUnit_Framework_TestCase' not found in …?
...g the most recent PHPUnit version on their PHP 7 builds. My fix was to manually download an old phar and use that instead.
– DisgruntledGoat
Mar 13 '17 at 17:12
2
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Can you define aliases for imported modules in Python?
...
import a_ridiculously_long_module_name as short_name
also works for
import module.submodule.subsubmodule as short_name
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What's the difference between ContentControl and ContentPresenter?
...8 SDK:
<ContentControl x:Name="contentControl" HorizontalAlignment="Stretch" HorizontalContentAlignment="Stretch" VerticalAlignment="Stretch" VerticalContentAlignment="Stretch">
<ContentPresenter x:Name="contentPresenter" CacheMode="BitmapCache"/>
</ContentControl>
Here you ...