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How do I remove duplicate items from an array in Perl?
...een; grep !$seen{$_}++, @_ } is a better implementation since it preserves order at no cost. Or even better, use the one from List::MoreUtils.
– ikegami
Nov 6 '12 at 18:51
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Algorithm to compare two images
...an remove words considered to be too common, for example 'The', 'A', 'And' etc. These words dilute our result, we want to work out how different the two corpus are so these can be removed before processing. Perhaps there are similar common signals in images that could be stripped before compressio...
OS detecting makefile
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I was recently experimenting in order to answer this question I was asking myself. Here are my conclusions:
Since in Windows, you can't be sure that the uname command is available, you can use gcc -dumpmachine. This will display the compiler target.
There...
Run an untrusted C program in a sandbox in Linux that prevents it from opening files, forking, etc.?
... the program from opening files, or network connections, or forking, exec, etc?
11 Answers
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Load view from an external xib file in storyboard
...ther than the original class. It doesn't actually have to be a subclass in order for this to work, but making it a subclass is what allows IB to see any IBInspectable/IBOutlet properties.
This extra boilerplate might seem suboptimal—and in a sense it is, because ideally UIStoryboard would handle ...
How to sort a list of objects based on an attribute of the objects?
...ble, a property of the class rather than incorporated in each instance the ordering is required.
This ensures consistency and removes the need for boilerplate code.
At a minimum, you should specify __eq__ and __lt__ operations for this to work. Then just use sorted(list_of_objects).
class Card(o...
Constructing pandas DataFrame from values in variables gives “ValueError: If using all scalar values
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Perhaps it is because the order of items in a list in Python are persistent whereas the ordering of items in a dictionary are not. You can instantiate a DataFrame with an empty dictionary. In principle I suppose a single-row DataFrame as shown here wo...
Authoritative position of duplicate HTTP GET query keys
... of the question, there is also the option of ['rails', 'ruby'] (different order).
– Thilo
Nov 18 '09 at 0:48
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How can I get a view's current width and height when using autolayout constraints?
...implement the entire constraint-solving logic of the auto layout system in order to interpret those constraints. Instead, what you should do is just ask auto layout to update that layout, so that it solves the constraints and updates the value of view.bounds with the correct solution, and then you i...
R data formats: RData, Rda, Rds etc
...Rda is just a short name for RData. You can just save(), load(), attach(), etc. just like you do with RData.
Rds stores a single R object. Yet, beyond that simple explanation, there are several differences from a "standard" storage. Probably this R-manual Link to readRDS() function clarifies such d...