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Best practices with STDIN in Ruby?
...sed via command line that contains login
ARGF.each do |line|
puts line if line =~ /login/
end
Thank goodness we didn’t get the diamond operator in Ruby, but we did get ARGF as a replacement. Though obscure, it actually turns out to be useful. Consider this program, which prepends copyright h...
How to push both value and key into PHP array
...ndexname2' => $value2); would set them as the only items in $arrayname. If you already have $arrayname set and want to keep its values, try $arrayname += $anotherarray. Keep in mind any existing keys in the first array would be overwritten by the second.
– Charlie Schliesser...
Spring Data: “delete by” is supported?
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Deprecated answer (Spring Data JPA <=1.6.x):
@Modifying annotation to the rescue. You will need to provide your custom SQL behaviour though.
public interface UserRepository extends JpaRepository<User, Long> {
@Modifying
@Query("delete from User u where u.firs...
What is the difference between SqlCommand.CommandTimeout and SqlConnection.ConnectionTimeout?
Is there any difference between SqlCommand.CommandTimeout and SqlConnection.ConnectionTimeout in .NET?
6 Answers
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Bytes of a string in Java
In Java, if I have a String x , how can I calculate the number of bytes in that string?
8 Answers
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Why should I use document based database instead of relational database?
...bly you shouldn't :-)
The second most obvious answer is you should use it if your data isn't relational. This usually manifests itself in having no easy way to describe your data as a set of columns. A good example is a database where you actually store paper documents, e.g. by scanning office mail...
Bootstrap datepicker hide after selection
How do I hide the calendar after a date is selected? Is there a specific function that I can use? My code below:
18 Answer...
How do I install an R package from source?
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If you have the file locally, then use install.packages() and set the repos=NULL:
install.packages(path_to_file, repos = NULL, type="source")
Where path_to_file would represent the full path and file name:
On Windows i...
Difference between angle bracket < > and double quotes “ ” while including header files in C++? [dup
What is the difference between angle bracket < > and double quotes " " while including header files in C++?
2 Ans...
Display a tooltip over a button using Windows Forms
...ltip will automatically appear when the cursor hovers over the button, but if you need to display it programatically, call
MyToolTip.Show("Tooltip text goes here", MyButton)
in your code to show the tooltip, and MyToolTip.Hide(MyButton) to make it disappear again.
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