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How do I drop table variables in SQL-Server? Should I even do this?
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Table variables are automatically local and automatically dropped -- you don't have to worry about it.
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Why is the minimalist, example Haskell quicksort not a “true” quicksort?
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The true quicksort has two beautiful aspects:
Divide and conquer: break the problem into two smaller problems.
Partition the elements in-place.
The short Haskell example demonstrates (1), but not (2). How (2) is done may not be obvious if you don't already know the technique!...
Why was the switch statement designed to need a break?
...instance, when compiling operators
that can have either one or two
operands:
switch (operator->num_of_operands) {
case 2: process_operand( operator->operand_2);
/* FALLTHRU */
case 1: process_operand( operator->operand_1);
break;
}
Case fall through is ...
When and why are database joins expensive?
I'm doing some research into databases and I'm looking at some limitations of relational DBs.
7 Answers
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How do you use colspan and rowspan in HTML tables?
I don't know how to merge rows and columns inside HTML tables.
11 Answers
11
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What is sharding and why is it important?
I think I understand sharding to be putting back your sliced up data (the shards) into an easy to deal with aggregate that makes sense in the context. Is this correct?
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Save classifier to disk in scikit-learn
How do I save a trained Naive Bayes classifier to disk and use it to predict data?
6 Answers
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Correct use of Multimapping in Dapper
...to use the Multimapping feature of dapper to return a list of ProductItems and associated Customers.
6 Answers
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Is there a code obfuscator for PHP? [closed]
...HP? I've tried some but they don't work for very big projects. They can't handle variables that are included in one file and used in another, for instance.
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Rails: How can I set default values in ActiveRecord?
...st this case like so:
self.number ||= 0.0 if self.has_attribute? :number
and for a boolean column...
self.bool_field = true if (self.has_attribute? :bool_value) && self.bool_field.nil?
Also note that the syntax is different prior to Rails 3.2 (see Cliff Darling's comment below)
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