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Simple explanation of MapReduce?
...hem back in the same kind of list.
suppose I have a list of numbers: [1,2,3] and I want to double every number, in this case, the function to "double every number" is function x = x * 2. And without mappings, I could write a simple loop, say
A = [1, 2, 3]
foreach (item in A) A[item] = A[item] * 2
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Why are C# 3.0 object initializer constructor parentheses optional?
It seems that the C# 3.0 object initializer syntax allows one to exclude the open/close pair of parentheses in the constructor when there is a parameterless constructor existing. Example:
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Ruby, Difference between exec, system and %x() or Backticks
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3 Answers
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Increasing nesting function calls limit
... limit in PHP: if you call some function a1() that calls a2(), that calls a3... so when a99() will call a100() you will see
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How to express a NOT IN query with ActiveRecord/Rails?
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Rails 4+:
Article.where.not(title: ['Rails 3', 'Rails 5'])
Rails 3:
Topic.where('id NOT I...
How can I limit a “Run Script” build phase to my release configuration?
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edited Mar 3 '11 at 20:30
answered Aug 31 '10 at 23:55
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How can Bash execute a command in a different directory context?
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38
You can use the cd builtin, or the pushd and popd builtins for this purpose. For example:
# do...
CSS last-child selector: select last-element of specific class, not last child inside of parent?
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:last-child only works when the element in question is the last child of the container, not the...
Argmax of numpy array returning non-flat indices
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How to exclude specific folders or files from validation in Eclipse?
... > Validation
– mmigdol
Jun 29 '13 at 1:08
What about for kinds of file that are not listed in Validation? .less fi...