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Maven project version inheritance - do I have to specify the parent version?
...May 14 '12 at 11:20
Michał KalinowskiMichał Kalinowski
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Postgres unique constraint vs index
...(ind_id)=(0) already exists.
test=#
It works as expected!
Foreign keys
Now we'll define detail table with two foreign keys referencing to our two columns in master.
create table detail (
con_id integer,
ind_id integer,
constraint detail_fk1 foreign key (con_id) references master(con...
inject bean reference into a Quartz job in Spring?
...g SpringBeanAutowiringSupport in your Quartz job, is that the job instance now needs to KNOW about Spring, which goes against the whole idea of IoC (dep injection). If you now for example need to use CDI, all your quartz jobs will need to be adjusted, instead of just the one job factory.
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How do you maintain development code and production code? [closed]
...might actually begin before to first release into production (meaning you know you will go into production with some bugs you can not fix in time, but you can initiate work for those bugs in a separate branch)
the other patch branches will have the luxury to start from a well-defined production labe...
How to sort a dataFrame in python pandas by two or more columns?
...n a future version of pandas. The way to sort a dataframe by its values is now is DataFrame.sort_values
As such, the answer to your question would now be
df.sort_values(['b', 'c'], ascending=[True, False], inplace=True)
s...
How to inject dependencies into a self-instantiated object in Spring?
...yBean obj = new MyBean();
beanFactory.autowireBean(obj);
// obj will now have its dependencies autowired.
}
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R and version control for the solo data analyst
...e this applies to you, but it would have made our clients very nervous to know that every version of every script that we had ever produced was potentially discoverable. We used version control for code modules that were reused in multiple engagements, but did not use version control for engagement...
Selecting pandas column by location
...: The original answer suggested the use of df.ix[:,2] but this function is now deprecated. Users should switch to df.iloc[:,2].
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What is the Difference Between Mercurial and Git?
I've been using git for some time now on Windows (with msysGit) and I like the idea of distributed source control. Just recently I've been looking at Mercurial (hg) and it looks interesting. However, I can't wrap my head around the differences between hg and git.
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List vs List
...oid withWilds( List<? extends Map<String,String>> foo ){}
void noWilds( List<Map<String,String>> foo ){}
void main( String[] args ){
List<HashMap<String,String>> myMap;
withWilds( myMap ); // Works
noWilds( myMap ); // Compiler error
}
You would th...