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What's the difference between @Component, @Repository & @Service annotations in Spring?
Can @Component , @Repository and @Service annotations be used interchangeably in Spring or do they provide any particular functionality besides acting as a notation device?
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How to do associative array/hashing in JavaScript
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var associativeArray = {};
associativeArray["one"] = "First";
associativeArray["two"] = "Second";
associativeArray["three"] = "Third";
If you are coming from an object-oriented language you should check this article.
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How to use XPath contains() here?
...his query will give you the elements that have a class of featureList with one or more li children that contain the text, 'Model'.
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How to remove a directory from git repository?
I have 2 directories on my GitHub repository. I'd like to delete one of them. How could I do that without deleting and re-creating entire repository?
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No @XmlRootElement generated by JAXB
... methods (and for large schema, there can be hundreds of them) to find the one you need.
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PostgreSQL: Show tables in PostgreSQL
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\dt is very useful. That pg_catalog.pg_tables one is much less so, as it appears to lump internal tables together with the user-created ones for whatever database you happen to be connected to.
– aroth
Jul 29 '13 at 6:25
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What does bundle exec rake mean?
...dler command to execute a script in the context of the current bundle (the one from your directory's Gemfile). rake db:migrate is the script where db is the namespace and migrate is the task name defined.
So bundle exec rake db:migrate executes the rake script with the command db:migrate in the con...
No newline at end of file
...tell the difference between a file where there is a newline at the end and one where is not. Diff has to output a newline anyway, or the result would be harder to read or process automatically.
Note that it is a good style to always put the newline as a last character if it is allowed by the file f...
Django CharField vs TextField
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One should also consider that in Oracle CharField can't have max_length greater than 2000, or it issues an ORA-00910: specified length too long for its datatype error.
– Dinei
Feb 8 '17 ...
Append values to a set in Python
...produce the values in a loop for some other reason,
for ...whatever...:
onemorevalue = ...whatever...
keep.add(onemorevalue)
But, of course, doing it in bulk with a single .update call is faster and handier, when otherwise feasible.
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