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How do I call one constructor from another in Java?
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If many constructor parameters are used, consider a builder. See Item 2 of "Effective Java" by Joshua Bloch.
– koppor
Nov 13 '12 at 20:16
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How to display unique records from a has_many through relationship?
...uite useful. Here's the code
OrdersController#show
@order = Order.find(params[:id])
@order_items_by_photo = @order.order_items.group_by(&:photo)
@order_items_by_photo then looks something like this:
=> {#<Photo id: 128>=>[#<OrderItem id: 2, photo_id: 128>, #<OrderIt...
How to get error information when HttpWebRequest.GetResponse() fails
...the response
console.Writeline(response.Body.Id); //where the body param matches the object you pass in as an anonymous type.
}else {
//do something with the error
console.Writelint(string.Format("{0}: {1}", response.StatusCode.ToString(), response.ErrorMessage);
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Awaiting multiple Tasks with different results
...but this does lots of overhead and allocates various arrays (including the params Task[] array) and lists (internally). It works, but it isn't great IMO. In many ways it is simpler to use an async operation and just await each in turn:
async Task<string> DoTheThings() {
Task<Cat> x ...
Asynctask vs Thread in android
...Invoked on the UI thread before the task is executed
doInbackground(Params..)
Invoked on the background thread immediately after onPreExecute()
finishes executing.
onProgressUpdate(Progress..)
Invoked on the UI thread after a call to publishProgress(Progress...).
onPos...
What's the difference between std::move and std::forward
...sing it.
std::forward has a single use case: to cast a templated function parameter (inside the function) to the value category (lvalue or rvalue) the caller used to pass it. This allows rvalue arguments to be passed on as rvalues, and lvalues to be passed on as lvalues, a scheme called "perfect fo...
PHP shell_exec() vs exec()
... by default, but can provide all output as an array specifed as the second parameter.
See
http://php.net/manual/en/function.shell-exec.php
http://php.net/manual/en/function.exec.php
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impr...
Non-CRUD operations in a RESTful service
... and it could be implemented by business logic to find directions based on params).
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Is there a way to get rid of accents and convert a whole string to regular letters?
...";
/**
* Returns string without diacritics - 7 bit approximation.
*
* @param source string to convert
* @return corresponding string without diacritics
*/
public static String removeDiacritic(String source) {
char[] vysl = new char[source.length()];
char one;
for (int i = 0; i <...
Complex nesting of partials and templates
... choose which controls I'm displaying based on what's coming in from $routeParams.
EDIT Here's some example pseudo-code to give you an idea of what I'm talking about. With a nested sub navigation.
Here's the main app page
<!-- primary nav -->
<a href="#/page/1">Page 1</a>
<a ...