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How can I convert a string to boolean in JavaScript?
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Do:
var isTrueSet = (myValue == 'true');
You could make it stricter by using the identity operator (===), which doesn't make any implicit type conversions when the compared variables have different types, instead of the equality operator (==).
var isTrueSet = (myValue === 'true')...
Using IPython notebooks under version control
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Here is my solution with git. It allows you to just add and commit (and diff) as usual: those operations will not alter your working tree, and at the same time (re)running a notebook will not alter your git history.
Although this can probably be...
What is the best method of handling currency/money?
... migration, do something like this:
# precision is the total number of digits
# scale is the number of digits to the right of the decimal point
add_column :items, :price, :decimal, :precision => 8, :scale => 2
In Rails, the :decimal type is returned as BigDecimal, which is great for price c...
How can I declare and define multiple variables in one line using C++?
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edited Jul 27 '11 at 1:14
Chris Eberle
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Java: Instanceof and Generics
... through my generic data structure for a value's index, I'd like to see if it is even an instance of the type this has been parametrized to.
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SQL: How to properly check if a record exists
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It's better to use either of the following:
-- Method 1.
SELECT 1
FROM table_name
WHERE unique_key = value;
-- Method 2.
SELECT COUNT(1)
FROM table_name
WHERE unique_key = value;
The first alternative should give you no r...
Google Maps API v3: How to remove all markers?
...earOverlays(); or map.clearOverlays(); function wherever required.
That's it!!
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Why is ArrayDeque better than LinkedList
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Linked structures are possibly the worst structure to iterate with a cache miss on each element. On top of it they consume way more memory.
If you need add/remove of the both ends, ArrayDeque is significantly better than a linked list. Random access each element is also O(1) fo...
What is the difference between “Class.forName()” and “Class.forName().newInstance()”?
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Demo demo = (Demo) clazz.newInstance();
}
}
As explained in its javadoc, calling Class.forName(String) returns the Class object associated with the class or interface with the given string name i.e. it returns test.Demo.class which is affected to the clazz variable of type Class.
The...
TypeError: got multiple values for argument
I read the other threads that had to do with this error and it seems that my problem has an interesting distinct difference than all the posts I read so far, namely, all the other posts so far have the error in regards to either a user created class or a builtin system resource. I am experiencing th...