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ALTER DATABASE failed because a lock could not be placed on database
...ng.
Connection 1 (leave running for a couple of minutes)
CREATE DATABASE TESTING123
GO
USE TESTING123;
SELECT NEWID() AS X INTO FOO
FROM sys.objects s1,sys.objects s2,sys.objects s3,sys.objects s4 ,sys.objects s5 ,sys.objects s6
Connections 2 and 3
set lock_timeout 5;
ALTER DATABASE TESTING1...
What is opinionated software?
...d leads to a lot of biased tutorials which insist upon covering, e.g. unit testing and dependency injection; I'm all for good testing and separation of concerns, but I do perceive that such topics are shoved down one's throat a little, often ahead of covering more useful basics.
There again, I do h...
How do I use the conditional operator (? :) in Ruby?
... :
0
I think that leads to really hard to read code as the conditional test and/or results get longer.
I've read comments saying not to use the ternary operator because it's confusing, but that is a bad reason to not use something. By the same logic we shouldn't use regular expressions, range o...
java.lang.ClassNotFoundException: org.springframework.web.servlet.DispatcherServlet
...upId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifac...
how to split the ng-repeat data with three columns using bootstrap
... the filter in a memoize function. lodash has a memoize function and the latest version of lodash also includes a chunk function, so we can create this filter very simply using npm modules and compiling the script with browserify or webpack.
Remember: display only! Filter in the controller if you'r...
Getting image dimensions without reading the entire file
...
Your best bet as always is to find a well tested library. However, you said that is difficult, so here is some dodgy largely untested code that should work for a fair number of cases:
using System;
using System.Collections.Generic;
using System.Drawing;
using System...
Error: could not find function … in R
...lly run a script that just loads every package needed and does some little test. This catches the package issue as early as possible in the workflow. This is akin to build testing or unit testing, except it's more like a smoke test to make sure that the very basic stuff works.
If packages can be s...
Best way to display decimal without trailing zeroes
...ix that problem. So for formatting decimals, G29 is the best bet.
decimal test = 20.5000m;
test.ToString("G"); // outputs 20.5000 like the documentation says it should
test.ToString("G29"); // outputs 20.5 which is exactly what we want
...
The model backing the context has changed since the database was created
...asax, it only fixes the problem when running the website. If you have unit tests, you're OOL. Better to put it in the constructor of YourDbContext. That fixes it for every project, including the website and test projects.
– Rap
Jul 9 '14 at 14:51
...
MySQL JOIN the most recent row only?
...'
LIMIT 10, 20;
Note that a JOIN is just a synonym for INNER JOIN.
Test case:
CREATE TABLE customer (customer_id int);
CREATE TABLE customer_data (
id int,
customer_id int,
title varchar(10),
forename varchar(10),
surname varchar(10)
);
INSERT INTO customer VALUES (1);
INS...