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Non-Relational Database Design [closed]
...oldemort,
etc)
Document databases (CouchDB,
MongoDB, etc)
Graph databases (AllegroGraph,
Neo4j, Sesame, etc)
I'm mostly into graph databases, and the elegance of data design using this paradigm was what brought me there, tired of the shortcomings of RDBMS. I have put a few examples of data design ...
Linq: What is the difference between Select and Where
...rable<A> in, IEnumerable<A> out
Select
returns something for all items in the source (projection / transformation). That something might be the items themselves, but are more usually a projection of some sort.
-> IEnumerable<A> in, IEnumerable<B> out
...
Are there any SHA-256 javascript implementations that are generally considered trustworthy?
...er. I'm having trouble figuring out which SHA-256 implementation I can actually trust. I was expecting there to be some kind of authoritative script that everyone used, but I'm finding loads of different projects all with their own implementations.
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Selecting/excluding sets of columns in pandas [duplicate]
...
@3kstc you can use df1.iloc[:, [-1]] this will select all rows, last column.
– Kocur4d
Apr 25 '18 at 10:16
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How to detect Adblock on my website?
...weight. I've been running it in production for a few years. AdBlock blocks all URLs containing the word "ads" or "prebid". So this is what I did:
I added a small js file to my webroot with the name prebid-ads.js
Update 2020-07-27: you might want to call the file prebid-ads.js or something, because u...
Does Spring Data JPA have any way to count entites using method name resolving?
...ount entities with specific name, just like a method findByName to fetch all entities with specific name.
12 Answers
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How to show the last queries executed on MySQL?
Is there any query/way to show the last queries executed on ALL servers?
10 Answers
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AsyncTask Android example
...o this is via switch statements. I have a complete class edited below with all suggestions to save confusion.
import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.provider.Settings.System;
import android.view.View;
import android.widget.Button;
import a...
Easiest way to compare arrays in C#
In Java, Arrays.equals() allows to easily compare the content of two basic arrays (overloads are available for all the basic types).
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SQL - many-to-many table primary key
...at the table sorted, just the index. And the index won't be stored sequentially, it'll be stored in an efficient manner to be able to be retrieved quickly.
In addition, the vast majority of database tables are read far more often than written. That makes anything you do on the select side far more ...