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What are the differences between JSON and JavaScript object? [duplicate]
... { foo: "bar" };
The quotes are mandatory on JSON because in JavaScript (more exactly in ECMAScript 3rd. Edition), the usage of reserved words as property names is disallowed, for example:
var o = { if: "foo" }; // SyntaxError in ES3
While, using a string literal as a property name (quoting the...
How do you find the row count for all your tables in Postgres
...se is hard to say. Normally I make that decision based on whether there's more useful information I also want to use inside of pg_class or inside of pg_stat_user_tables. For basic counting purposes just to see how big things are in general, either should be accurate enough.
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Scatterplot with marginal histograms in ggplot2
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Is there a way to measure how sorted a list is?
...sorting algorithm you choose, you will end up with an algorithm that is no more expensive (in terms of complexity) than the sorting algorithm you started with.
If you take this route, be aware that it's not as simple as counting "swaps." Mergesort, for example, is worst case O(N log N), yet if it is...
JSF backing bean structure (best practices)
...ormally session or application scope. This type of bean "supports" one or more views in the "View" concern of the MVC design pattern. The typical use case is supplying an ArrayList to JSF h:selectOneMenu drop-down lists that appear in more than one JSF view. If the data in the dropdown lists is par...
How do I get the parent directory in Python?
...t but convoluted; os.path.dirname is the function for this, like a+=5-4 is more convoluted than a+=1. The question requested only the parent directory, not whether is exists or the true parent directory assuming symbolic links get in the way.
– tzot
May 24 '10 ...
Why does @foo.setter in Python not work for me?
...his it won't work:
@x.setter
def x_setter(self, value):
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And one more thing that is not completely easy to spot at first, is the order: The getter must be defined first. If you define the setter first, you get name 'x' is not defined error.
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JavaScript chop/slice/trim off last character in string
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Capitalize only first character of string and leave others alone? (Rails)
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How do you calculate the average of a set of circular data? [closed]
...tion 26.56 deg relative to where I started. In this sense 26.56 makes much more sense as the average direction of {0,0,90} deg than 30 deg. The algebraic average is just one of many possible averages (see en.wikipedia.org/wiki/Mean )-- and it seems quite irrelevant for the purpose of averaging dire...