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R script line numbers at error?
If I am running a long R script from the command line (R --slave script.R), how can I get it to give line numbers at errors?
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How can I get a collection of keys in a JavaScript dictionary? [duplicate]
... shim it in older browsers...
const keys = Object.keys(driversCounter);
If you wanted values, there is Object.values() and if you want key and value, you can use Object.entries(), often paired with Array.prototype.forEach() like this...
Object.entries(driversCounter).forEach(([key, value]) =>...
Is there a command to list SVN conflicts?
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On Linux, if you want to see only the conflicts, pipe the status through grep.
svn status | grep -P '^(?=.{0,6}C)'
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How to quickly and conveniently create a one element arraylist [duplicate]
...List backed by a varargs T.
return Arrays.asList(s);
Variable size List
If it needs vary in size you can construct an ArrayList and the fixed-sizeList like
return new ArrayList<String>(Arrays.asList(s));
and (in Java 7+) you can use the diamond operator <> to make it
return new A...
@OneToMany List vs Set difference
Is there any difference if I use
2 Answers
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Why do you need to create a cursor when querying a sqlite database?
...be used to fetch data from the DBMS into an
application but also to identify a row in a table to be updated or
deleted. The SQL:2003 standard defines positioned update and
positioned delete SQL statements for that purpose. Such statements do
not use a regular WHERE clause with predicates. In...
Easiest way to copy a table from one database to another?
... one database to a table in another database when the databases are under different users?
18 Answers
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How to visualize an XML schema? [closed]
I have made an XML Schema - all the code basically - and was wondering if there is a way that the code can generate something like this:
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Correct use of flush() in JPA/Hibernate
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if flush() sends data to the database? what happens if an exception is thrown after that? Will the entity manager rollback everything? even the data written in the first flush?
– Jaime Hablutzel
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Getting name of the class from an instance
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if all you want to do is test an object to see if it's a type of a certain Class
BOOL test = [self isKindOfClass:[SomeClass class]];
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