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What is the difference between typeof and instanceof and when should one be used vs. the other?
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Use instanceof for custom types:
var ClassFirst = function () {};
var ClassSecond = function () {};
var instance = new ClassFirst();
typeof instance; // object
typeof instance == 'ClassFirst'; // false
instance instanceof Object; // true
insta...
Why does Python use 'magic methods'?
...rably only one --obvious way to do it.
This is one of the reasons - with custom methods, developers would be free to choose a different method name, like getLength(), length(), getlength() or whatsoever. Python enforces strict naming so that the common function len() can be used.
All operations t...
What is this 'Lambda' everyone keeps speaking of?
...od takes a function that it uses to test the values, so all we need is our custom logic. This allows us to greatly customize the method with practically no effort or overhead. Basically, we can compose functions out of smaller functions.
That's just an easy example of what they can do. The ability ...
Is duplicated code more tolerable in unit tests?
...lity.
If the duplication is in the assertions, then perhaps you need some Custom Assertions. For example, if multiple tests have a string of assertions like:
assertEqual('Joe', person.getFirstName())
assertEqual('Bloggs', person.getLastName())
assertEqual(23, person.getAge())
Then perhaps you n...
Eclipse IDE for Java - Full Dark Theme
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Here is my Black Eclipse Custom CSS for Chrome Theme Plugin. Usable with eclipse 4.2 and 4.3. Main goal was to make it look nice in ubuntu, besides making it "darker".
Caution: May or may not work on Windows Systems, only checked with ubuntu.
Requi...
Django Rest Framework File Upload
...hod and is only sending non-Json data as key value pairs, you don't need a custom parser class. DRF'd MultipartParser will do the job. But for the second case or if you have nested serializers (like i have shown) you will need custom parser as shown below.
utils.py
from django.http import QueryDic...
How to generate .NET 4.0 classes from xsd?
... an issue if you want strong typed objects. I often use any when allowing custom config data, so an XmlElement is convenient to pass to another XML deserializer that is custom defined elsewhere.
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NSOperation vs Grand Central Dispatch
...patch it to be performed on a serial or concurrent queue, where creating a custom NSOperation or NSInvocationOperation to do this requires a lot more supporting code. I know that you can use an NSBlockOperation, but you might as well be dispatching something to GCD then. Wrapping this code in blocks...
How do I use vi keys in ipython under *nix?
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Where do I add my custom key binding mappings?
– Aravinda
Jul 21 '16 at 12:17
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How can I cast int to enum?
...ss public auto ansi serializable sealed BarFlag extends System.Enum
{
.custom instance void System.FlagsAttribute::.ctor()
.custom instance void ComVisibleAttribute::.ctor(bool) = { bool(true) }
.field public static literal valuetype BarFlag AllFlags = int32(0x3fff)
.field public st...