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What is the difference between $(command) and `command` in shell programming?
To store the output of a command as a variable in sh/ksh/bash, you can do either
6 Answers
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Can I load a UIImage from a URL?
... loading
Works well with UITableView
Quick example:
[cell.imageView setImageWithURL:[NSURL URLWithString:@"http://www.domain.com/path/to/image.jpg"] placeholderImage:[UIImage imageNamed:@"placeholder.png"]];
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What method in the String class returns only the first N characters?
I'd like to write an extension method to the String class so that if the input string to is longer than the provided length N , only the first N characters are to be displayed.
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Counting occurrences in Vim without marking the buffer changed
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:help count-items
In VIM 6.3, here's how you do it.
:set report=0
:%s/your_word/&/g # returns the count without substitution
In VIM 7.2, here's how you'd do it:
:%s/your_word/&/gn # returns the count, n flag avoids substitution
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Quickly find whether a value is present in a C array?
...inimum) and check if a value matches the arrays contents. A bool will be set to true is this is the case.
15 Answers
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check if variable is dataframe
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How to reverse a 'rails generate'
I want to delete all the files it created and roll back any changes made, but not necessarily to the database, but more to the config files.
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node.js: read a text file into an array. (Each line an item in the array.)
I would like to read a very, very large file into a JavaScript array in node.js.
13 Answers
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Standardize data columns in R
I have a dataset called spam which contains 58 columns and approximately 3500 rows of data related to spam messages.
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JavaScript hashmap equivalent
...e as simple as selecting right attributes of the object, e.g., a key, or a set of keys, which are already unique, a combination of keys, which are unique together, or as complex as using some cryptographic hashes like in DojoX encoding, or DojoX UUID. While the latter solutions may produce unique ke...