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Is there a way to comment out markup in an .ASPX page?
...hat it isn't delivered to the client? I have tried the standard comments <!-- --> but this just gets delivered as a comment and doesn't prevent the control from rendering.
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Pass a data.frame column name to a function
...
You can just use the column name directly:
df <- data.frame(A=1:10, B=2:11, C=3:12)
fun1 <- function(x, column){
max(x[,column])
}
fun1(df, "B")
fun1(df, c("B","A"))
There's no need to use substitute, eval, etc.
You can even pass the desired function as a param...
Can CSS force a line break after each word in an element?
I'm building a multilingual site, with the owner helping me with some translations. Some of the displayed phrases need line breaks to maintain the style of the site.
...
How to handle dependency injection in a WPF/MVVM application
...rolViewModel UserControlViewModel
{
get { return IocKernel.Get<UserControlViewModel>();} // Loading UserControlViewModel will automatically load the binding for IStorage
}
}
Make the ViewModelLocator an application wide resource in App.xaml:
<Application ...>
<A...
How can I check the size of a collection within a Django template?
...
See https://docs.djangoproject.com/en/stable/ref/templates/builtins/#if : just use, to reproduce their example:
{% if athlete_list %}
Number of athletes: {{ athlete_list|length }}
{% else %}
No athletes.
{% endif %}
...
How to make HTML input tag only accept numerical values?
I need to make sure that a certain <input> field only takes numbers as value.
The input is not part of a form. Hence it doesn't get submitted, so validating during submission is not an option. I want the user to be unable to type in any characters other than numbers.
...
Get keys from HashMap in Java
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If you want to store all keys in array list : List<String> keys = new ArrayList<>(mLoginMap.keySet());
– Pratik Butani
Dec 24 '18 at 6:42
...
A generic list of anonymous class
...bly as an extension method). Another example might be:
public static List<T> CreateList<T>(params T[] elements)
{
return new List<T>(elements);
}
var list = CreateList(o, o1);
You get the idea :)
s...
How can I get the list of files in a directory using C or C++?
...excellent answer from Shreevardhan below with this source code:
#include <string>
#include <iostream>
#include <filesystem>
namespace fs = std::filesystem;
int main()
{
std::string path = "/path/to/directory";
for (const auto & entry : fs::directory_iterator(path))
...
Select first 4 rows of a data.frame in R
...
Use head:
dnow <- data.frame(x=rnorm(100), y=runif(100))
head(dnow,4) ## default is 6
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