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How can I merge two hashes without overwritten duplicate keys in Ruby?
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If you have two hashes, options and defaults, and you want to merge defaults into options without overwriting existing keys, what you really want to do is the reverse: merge options into defaults:
options = defaults.merge(options)
Or, if you're using Rai...
Difference between Select Unique and Select Distinct
...is synonymous with SELECT DISTINCT.
Use SELECT DISTINCT because this is standard SQL, and SELECT UNIQUE is non-standard, and in database brands other than Oracle, SELECT UNIQUE may not be recognized at all.
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Adding data attribute to DOM
...ement within jquery. After that, I want to add attribute "data". He's like and is added, but in the DOM, this is not apparent, and I can't get the item, using
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Creating threads - Task.Factory.StartNew vs new Thread()
I am just learning about the new Threading and Parallel libraries in .Net 4
4 Answers
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How does `scp` differ from `rsync`?
...n these tools is how they copy files.
scp basically reads the source file and writes it to the destination. It performs a plain linear copy, locally, or over a network.
rsync also copies files locally or over a network. But it employs a special delta transfer algorithm and a few optimizations to m...
Objective-C: Extract filename from path string
...etingPathExtension];
The lastPathComponent call will return thefile.ext, and the stringByDeletingPathExtension will remove the extension suffix from the end.
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Iterate over each line in a string in PHP
...ts of the file into a textarea. I can easily differentiate between the two and put whichever one they entered into a string variable, but where do I go from there?
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Razor HtmlHelper Extensions (or other namespaces for views) Not Found
...nsure you have the right config values.
Note that you might need to close and reopen the file for the changes to be picked up by the editor.
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How to create query parameters in Javascript?
... answered Aug 26 '18 at 16:41
Andrew PalmerAndrew Palmer
1,1021111 silver badges1313 bronze badges
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Rails server says port already used, how to kill that process?
...rectory to the following file tmp/pids/server.pid
– tandy
Feb 15 '14 at 19:29
This can happen if you're running debugg...