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What's the best way to unit test protected & private methods in Ruby?
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Here's one easy way if you use RSpec:
before(:each) do
MyClass.send(:public, *MyClass.protected_instance_methods)
end
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How can I distribute python programs?
... way of distributing Python applications is with distutils. It's made both for distributing library type python modules, and python applications, although I don't know how it works on Windows. You would on Windows have to install Python separately if you use distutils, in any case.
I'd probably rec...
Why are dates calculated from January 1st, 1970?
... there any reason behind using date(January 1st, 1970) as default standard for time manipulation? I have seen this standard in Java as well as in Python. These two languages I am aware of. Are there other popular languages which follows the same standard?
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Why does SIGPIPE exist?
...nswer. SIGPIPE is generated exactly when the write fails with EPIPE, not beforehand - in fact one safe way to avoid SIGPIPE without changing global signal dispositions is to temporarily mask it with pthread_sigmask, perform the write, then perform sigtimedwait (with zero timeout) to consume any pend...
LINQ to SQL Left Outer Join
...only 0-1. To do a left outer join, you need SelectMany and DefaultIfEmpty, for example:
var query = from c in db.Customers
join o in db.Orders
on c.CustomerID equals o.CustomerID into sr
from x in sr.DefaultIfEmpty()
select new {
Cust...
What is a NullPointerException, and how do I fix it?
...In this example, the variable x is an int and Java will initialize it to 0 for you. When you assign it the value of 10 on the second line, your value of 10 is written into the memory location referred to by x.
But, when you try to declare a reference type, something different happens. Take the follo...
Is there a max array length limit in C++?
Is there a max length for an array in C++?
12 Answers
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AngularJS sorting by property
... objects. So you have to write an own small filter, which does the sorting for you.
Or change the format of data you handle with (if you have influence on that). An array containing objects is sortable by native orderBy filter.
Here is my orderObjectBy filter for AngularJS:
app.filter('orderObjec...
Getting value of public static final field/property of a class in Java via reflection
... value. If you know the type you can use one of the get methods with null (for static fields only, in fact with a static field the argument passed to the get method is ignored entirely). Otherwise you can use getType and write an appropriate switch as below:
Field f = R.class.getField("_1st");
Clas...
CORS - How do 'preflight' an httprequest?
...n HTTP request to WCF service (that I own). I have read several techniques for working with the cross domain scripting limitations. Because my service must accommodate both GET and POST requests I cannot implement some dynamic script tag whose src is the URL of a GET request. Since I am free to make...