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How to get the part of a file after the first line that matches a regular expression?
...g the TERMINATE regular expression (like grep) to the end of the file ($), and p is the print command which prints the current line.
This will print from the line that follows the line matching TERMINATE till the end of the file:
(from AFTER the matching line to EOF, NOT including the matching line...
What is the best way to clear a session variable in rails?
...will leave the :message key in the session hash, this will destroy the key and value, as if your session never had any value assigned to that key.
– Brett Bender
Oct 22 '10 at 17:22
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Prevent user from seeing previously visited secured page after logout
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You can and should not disable the browser back button or history. That's bad for user experience. There are JavaScript hacks, but they are not reliable and will also not work when the client has JS disabled.
Your concrete problem ...
Uploading base64 encoded Image to Amazon S3 via Node.js
Yesterday I did a deep night coding session and created a small node.js/JS (well actually CoffeeScript, but CoffeeScript is just JavaScript so lets say JS) app.
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How do you change the size of figures drawn with matplotlib?
...figsize=(8, 6), ...) to change it's size etc. If you're using pyplot/pylab and show() to create a popup window, you need to call figure(num=1,...) before you plot anything - pyplot/pylab creates a figure as soon as you draw something, and the size of the popup appears to be fixed at this point.
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How to show “Done” button on iPhone number pad
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@BenPotter You would set the barTint for the bar color and tint color for the text. You could also create the UIBarButton items out side of the intializer and set the color for them explicitly there.
– ocross
May 6 '14 at 23:55
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Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
...so force using a socket with the socket parameter (-S with /usr/bin/mysql) and force TCP/IP by providing a port (-P with /usr/bin/mysql.)
– Kaoru
Jun 1 '14 at 11:17
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What is the difference between bottom-up and top-down?
...namic programming) consists in first looking at the "smaller" subproblems, and then solve the larger subproblems using the solution to the smaller problems.
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Ruby / Rails: convert int to time OR get time from integer?
...]) => time: Creates a new time object with the given number of seconds (and optional microseconds) from epoch.
API links
ruby-doc.org/core/classes/Time
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How to keep Maven profiles which are activeByDefault active even if another profile gets activated?
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One trick is to avoid activeByDefault, and instead activate the profile by the absence of a property, eg:
<profiles>
<profile>
<id>firstProfile</id>
<activation>
<property>
<name>!skipFirstProfile&...