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grep output to show only matching file
...s the option for grep that will allow me only to print the matching file and not the line within a file that matches the criteria?
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find() with nil when there are no records
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Yes, just do:
Challenge.find_by_id(10)
For Rails 4 and 5:
Challenge.find_by(id: 10)
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How to monitor the memory usage of Node.js?
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node-memwatch : detect and find memory leaks in Node.JS code.
Check this tutorial Tracking Down Memory Leaks in Node.js
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How to store CGRect values in NSMutableArray?
How would I store CGRect objects in a NSMutableArray, and then later retrieve them?
4 Answers
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Open Source Java Profilers [closed]
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The VisualVM profiler is a stand-alone version of the one in NetBeans. It is a VERY good start.
– Thorbjørn Ravn Andersen
Jun 4 '09 at 6:06
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How to compare two strings in dot separated version format in Bash?
Is there any way to compare such strings on bash, e.g.: 2.4.5 and 2.8 and 2.4.5.1 ?
29 Answers
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Node.js client for a socket.io server
I have a socket.io server running and a matching webpage with a socket.io.js client. All works fine.
5 Answers
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What is the right way to POST multipart/form-data using curl?
... edited May 20 '15 at 18:35
evandrix
5,36333 gold badges2525 silver badges3232 bronze badges
answered Oct 2 '13 at 23:59
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How can I hide an HTML table row so that it takes up no space?
...et to style="display:none;" , but they still affect the size of the table and the table's border reflects the hidden rows.
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How do I create an empty array in YAML?
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I just wanted to add that you can go into irb and type something like: "require 'yaml'; YAML::dump({ :hi => [] })" to see what the yaml should be for an object.
– Mike A.
Feb 24 '11 at 21:15
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