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In SQL Server, when should you use GO and when should you use semi-colon ;?
...ain the ; statement terminator. In another DBMS I have seen the ability to set the termination string. For example, you might specify that statements end with two pipe characters ||. You could then issue CREATE PROCEDURE ... much SQL ending in ; ... || and the double pipe ends the CREATE PROCEDURE s...
“Diff” an image using ImageMagick
...with black color, the same with the R + B channels on the second layer, 4) set Screen mode for the upper layer in the Layers tab.
– Matěj Šmíd
Feb 23 '16 at 12:25
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Master-master vs master-slave database architecture?
...ve Replication
Master-Master Replication
MySQL Cluster
I have decided to settle for using MySQL Cluster for my use case. However please see below for the various pros and cons that I have compiled
1. Master-Slave Replication
Pros
Analytic applications can read from the slave(s) without impact...
In Scala how do I remove duplicates from a list?
...st[java.lang.String] = List(a, b, c)
Update. Others have suggested using Set rather than List. That's fine, but be aware that by default, the Set interface doesn't preserve element order. You may want to use a Set implementation that explicitly does preserve order, such as collection.mutable.Linke...
How to execute mongo commands through shell scripts?
...vironment variable:
mongo --eval 'db.mycollection.update({"name":"foo"},{$set:{"this":"that"}});' myDbName
Otherwise you may see something like this:
mongo --eval "db.test.update({\"name\":\"foo\"},{$set:{\"this\":\"that\"}});"
> E QUERY SyntaxError: Unexpected token :
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What happens to global and static variables in a shared library when it is dynamically linked?
...on unit (which becomes an object file) in which they are defined. So, that settles that issue.
Where it gets complicated is when you have extern global variables. Here, Windows and Unix-like systems are completely different.
In the case of Windows (.exe and .dll), the extern global variables are n...
git diff between cloned and original remote repository
...as an alternative: git remote update - it will update all of your branches set to track remote ones, but not merge any changes in; or git pull
– Timo
Oct 9 '17 at 20:51
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How does Spring Data JPA differ from Hibernate for large projects?
...epository. You have to also create a MyJpaRepositoryFactoryBean but if you set it all up correctly, you can override the .save() method. Here is the Spring Data JPA Docs: static.springsource.org/spring-data/data-jpa/docs/current/… Don't give up just yet!
– sbzoom
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parseInt vs unary plus, when to use which?
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#Please see this answer for a more complete set of cases
Well, here are a few differences I know of:
An empty string "" evaluates to a 0, while parseInt evaluates it to NaN. IMO, a blank string should be a NaN.
+'' === 0; //true
isNaN(parseInt('',1...
Python, creating objects
...kly see which variables are in the class scope since they might not all be set by the constructor.
– Wulfram
Nov 8 '13 at 0:00
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