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What is the difference between IEnumerator and IEnumerable? [duplicate]
... and the MoveNext and Reset methods (which in .NET code you probably won't call explicitly, though you could).
An IEnumerable is a thing that can be enumerated...which simply means that it has a GetEnumerator method that returns an IEnumerator.
Which do you use? The only reason to use IEnumerator...
How to cast Object to its actual type?
...nt but is simple and does the job.
It performs two operations: firstly it calls .ToString() which is basiclly a serialization, and then the deserialization using Newtonsoft nuget (which you must install).
public T Format<T>(Object obj) =>
JsonConvert.DeserializeObject<T>(obj.ToS...
Android Min SDK Version vs. Target SDK Version
...
The comment posted by the OP to the question (basically stating that the targetSDK doesn't affect the compiling of an app) is entirely wrong! Sorry to be blunt.
In short, here is the purpose to declaring a different targetSDK from the minSDK: It means you are using features...
Interface naming in Java [closed]
...nsider that to be more important in terms of the naming convention. If you call the interface IUser then every consumer of that class needs to know its an IUser. If you call the class UserImpl then only the class and your DI container know about the Impl part and the consumers just know they're work...
Why is creating a Thread said to be expensive?
...of memory has to be allocated and initialized for the thread stack.
System calls need to be made to create / register the native thread with the host OS.
Descriptors need to be created, initialized and added to JVM-internal data structures.
It is also expensive in the sense that the thread ties do...
CSS horizontal centering of a fixed div?
...creen, even if the page is scrolled it should always stay CENTERED in the middle of the screen!
8 Answers
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What is the proper way to use the node.js postgresql module?
... access to your database in your app to one file. Don't litter pg.connect calls or new clients throughout. Have a file like db.js that looks something like this:
module.exports = {
query: function(text, values, cb) {
pg.connect(function(err, client, done) {
client.query(text, valu...
Unit testing code with a file system dependency
...here's really nothing wrong with this, it's just a question of whether you call it a unit test or an integration test. You just have to make sure that if you do interact with the file system, there are no unintended side effects. Specifically, make sure that you clean up after youself -- delete an...
How can I use pickle to save a dict?
... in CPython(The default python that you probably have) the file is automatically closed whenever the file object expires (when nothing refers to it). In this case since nothing refers to the file object after being returned by open(), it will be closed as soon as load returns. This is not considered...
Store boolean value in SQLite
...ase specific values e.g.
CREATE TABLE IF NOT EXISTS "boolean_test"
(
"id" INTEGER PRIMARY KEY AUTOINCREMENT
, "boolean" TEXT NOT NULL
CHECK( typeof("boolean") = "text" AND
"boolean" IN ("TRUE","FALSE")
)
);
INSERT INTO "boolean_test" ("boolean") VALUES ("TRUE"...