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JSON.parse vs. eval()
My Spider Sense warns me that using eval() to parse incoming JSON is a bad idea. I'm just wondering if JSON.parse() - which I assume is a part of JavaScript and not a browser-specific function - is more secure.
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What is reflection and why is it useful?
...ass().getMethod("doSomething", null);
method.invoke(foo, null);
One very common use case in Java is the usage with annotations. JUnit 4, for example, will use reflection to look through your classes for methods tagged with the @Test annotation, and will then call them when running the unit test.
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How to git log from all branches for the author at once?
I need to get the report of all commits that the author did. So far, I have the script that wraps the following command:
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Maven: how to override the dependency added by a library
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Reset the database (purge all), then seed a database
Is there a rake command to wipe out the data in the database tables?
6 Answers
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How to map calculated properties with JPA and Hibernate
...SQL fragment:
@Formula("PRICE*1.155")
private float finalPrice;
Or even complex queries on other tables:
@Formula("(select min(o.creation_date) from Orders o where o.customer_id = id)")
private Date firstOrderDate;
Where id is the id of the current entity.
The following blog post is worth the...
Understanding the difference between __getattr__ and __getattribute__
...ame of the attribute in advance).
For example, instance.attribute would become getattr(instance, attribute_name). Using this model, we can get the attribute by supplying the attribute_name as a string.
Use of __getattr__
You can also tell a class how to deal with attributes which it doesn't expl...
Switch to another Git tag
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Clone the repository as normal:
git clone git://github.com/rspec/rspec-tmbundle.git RSpec.tmbundle
Then checkout the tag you want like so:
git checkout tags/1.1.4
This will checkout out the tag in a 'detached HEAD' state. In this state, "you can look around, make experimenta...
How to delete items from a dictionary while iterating over it?
...ns because mydict.keys() returns an iterator not a list.
As pointed out in comments simply convert mydict.keys() to a list by list(mydict.keys()) and it should work.
A simple test in the console shows you cannot modify a dictionary while iterating over it:
>>> mydict = {'one': 1, 'two...
How to select an element inside “this” in jQuery?
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