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Drop data frame columns by name
...comma, you use the "list" way of selecting, which means that even when you extract a single column, you still get a data frame returned. If you use the "matrix" way, as you do, you should be aware that if you only select a single column, you get a vector instead of a data frame. To avoid that, you n...
What's the difference between SoftReference and WeakReference in Java?
...ort java.util.HashMap;
public class Test {
public static void main(String args[]) {
HashMap<Employee, EmployeeVal> aMap = new
HashMap<Employee, EmployeeVal>();
Employee emp = new Employee("Vinoth");
EmployeeVal val = new EmployeeVa...
How do I view the full content of a text or varchar(MAX) column in SQL Server 2008 Management Studio
... and extra rows all become concatenated with the first one. Finally if the string contains characters such as < opening the XML viewer fails with a parsing error.
A more robust way of doing this that avoids issues of SQL Server converting < to &lt; etc or failing due to these characters i...
How to count the number of set bits in a 32-bit integer?
...bit elements in a 64-bit integer with a 0x0101010101010101 multiplier, and extract the high byte with >>56. So it doesn't take any extra steps, just wider constants. This is what GCC uses for __builtin_popcountll on x86 systems when the hardware popcnt instruction isn't enabled. If you can ...
AngularJS : The correct way of binding to a service properties
...Timer.data in a $watch, Timer has to be defined on the $scope, because the string expression you pass to $watch is evaluated against the scope. Here is a plunker that shows how to make that work. The objectEquality parameter is documented here -- 3rd parameter -- but not really explained too well....
What is the proper way to display the full InnerException?
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You can simply print exception.ToString() -- that will also include the full text for all the nested InnerExceptions.
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TextView.setTextSize behaves abnormally - How to set text size of textview dynamically for different
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Adding some extra flavor for this answer, as also ran into a bit of confusion. You should be able to drop this test into any @RunWith(AndroidJUnit4.class) test you have in your project (you'll also need to add the dimens to your dimens.x...
Looping through the content of a file in Bash
...ine has less than three fields, the missing fields will be set to an empty string
# if the line has more than three fields, `field3` will get all the values, including the third field plus the delimiter(s)
done < input.txt
Reading from the output of another command, using process substitution...
Render a string in HTML and preserve spaces and linebreaks
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I guess the 'problem' with MVC is that if I change the string as you suggest it will display the '&nbsp;' instead of the spaces, unless I use @Html.Raw(). Then I have to be concerned about xss and the user entering bad html. I could however encode the strings on insert so tha...
How to concatenate strings of a string field in a PostgreSQL 'group by' query?
I am looking for a way to concatenate the strings of a field within a group by query. So for example, I have a table:
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