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MongoDB: How to update multiple documents with a single command?
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Multi update was added recently, so is only available in the development releases (1.1.3). From the shell you do a multi update by passing true as the fourth argument to update(), where the the third argument is the upsert argu...
How to get the text node of an element?
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var text = $(".title").contents().filter(function() {
return this.nodeType == Node.TEXT_NODE;
}).text();
This gets the contents of the selected element, and applies a filter function to it. The filter function returns only text nodes (i.e. those nodes with ...
Best way to add “current” class to nav in Rails 3
...te the same way as you are. I've just defined helper methods to test for multiple controller or actions:
In application_helper.rb
def controller?(*controller)
controller.include?(params[:controller])
end
def action?(*action)
action.include?(params[:action])
end
Then you can use ...
How to solve the “failed to lazily initialize a collection of role” Hibernate exception
...e.EAGER, mappedBy = "topic", cascade = CascadeType.ALL)
private Collection<Comment> comments = new LinkedHashSet<Comment>();
Collections are lazy-loaded by default, take a look at this if you want to know more.
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How do I get the path of a process in Unix / Linux
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On Linux, the symlink /proc/<pid>/exe has the path of the executable. Use the command readlink -f /proc/<pid>/exe to get the value.
On AIX, this file does not exist. You could compare cksum <actual path to binary> and cksum /proc/<...
How to convert xml into array in php?
...on_decode you can use the optional second parameter as TRUE (normally defaults to FALSE) to convert the JSON input to an associative array.
– Jake Bathman
Sep 26 '14 at 19:20
16
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How do I inject a controller into another controller in AngularJS
...);
Now the usage of these above components might be something like this:
<wizard-container ....>
<!--some stuff-->
...
<!-- some where there is this page that displays initial step via child component -->
<on-boarding-step ...>
<!--- some stuff-->
</on-boarding-st...
How do I concatenate two strings in C?
...ate two strings. You could use the following function to do it:
#include <stdlib.h>
#include <string.h>
char* concat(const char *s1, const char *s2)
{
char *result = malloc(strlen(s1) + strlen(s2) + 1); // +1 for the null-terminator
// in real code you would check for errors in...
How do you sort a dictionary by value?
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Use:
using System.Linq.Enumerable;
...
List<KeyValuePair<string, string>> myList = aDictionary.ToList();
myList.Sort(
delegate(KeyValuePair<string, string> pair1,
KeyValuePair<string, string> pair2)
{
return pair1.Value.Comp...
Java 8 Lambda function that throws exception?
... checked exception:
@FunctionalInterface
public interface CheckedFunction<T, R> {
R apply(T t) throws IOException;
}
and use it:
void foo (CheckedFunction f) { ... }
Otherwise, wrap Integer myMethod(String s) in a method that doesn't declare a checked exception:
public Integer myWrapp...