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Can hash tables really be O(1)?
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You have two variables here, m and n, where m is the length of the input and n is the number of items in the hash.
The O(1) lookup performance claim makes at least two assumptions:
Your objects can be equality compared in O(1) time.
There will be few hash collisions.
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Link vs compile vs controller
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Compile :
This is the phase where Angular actually compiles your directive. This compile function is called just once for each references to the given directive. For example, say you are using the ng-repeat directive. ng-repeat will have...
Checking for empty arrays: count vs empty
This question on ' How to tell if a PHP array is empty ' had me thinking of this question
12 Answers
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When to use margin vs padding in CSS [closed]
When writing CSS, is there a particular rule or guideline that should be used in deciding when to use margin and when to use padding ?
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Why is there huge performance hit in 2048x2048 versus 2047x2047 array multiplication?
... some matrix multiplication benchmarking, as previously mentioned in
Why is MATLAB so fast in matrix multiplication?
10 A...
Is JavaScript a pass-by-reference or pass-by-value language?
...oth passed-by-value (in case we consider that a variable holding an object is in fact a reference to the object) and passed-by-reference (when we consider that the variable to the object holds the object itself).
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What's the difference between Perl's backticks, system, and exec?
Can someone please help me? In Perl, what is the difference between:
5 Answers
5
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What's the difference between a method and a function?
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A function is a piece of code that is called by name. It can be passed data to operate on (i.e. the parameters) and can optionally return data (the return value). All data that is passed to a function is explicitly passed.
A method is ...
How do I pass variables and data from PHP to JavaScript?
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There are actually several approaches to do this. Some require more overhead than others, and some are considered better than others.
In no particular order:
Use AJAX to get the data you need from the server.
Echo the data into the page somewhere, and use JavaScript t...
Should I return a Collection or a Stream?
Suppose I have a method that returns a read-only view into a member list:
9 Answers
9
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