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“Wrong type argument: commandp” error when binding a lambda to a key
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The correct form should be this -
(global-set-key (kbd "M-n") (lambda () (interactive) (forward-line 5)))
The problem was that you forgot to put (interactive) (as brendan mentioned).
By the way, you will notice that I used the (kbd) ...
How to set a default value for a datetime column to record creation time in a migration?
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Bad form to vote something down and not explain what issue was taken with the answer. Anybody have an idea why this was voted down? It's displaying the syntax if you wanted to change a column instead of creating one.
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What is an anti-pattern?
...gn patterns which are common approaches to common problems which have been formalized and are generally considered a good development practice, anti-patterns are the opposite and are undesirable.
For example, in object-oriented programming, the idea is to separate the software into small pieces cal...
Vim: How do you open another [No Name] buffer like the one on startup?
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Base64 encoding and decoding in client-side Javascript
...heme. Surprise: this function urlencodes every character, so I get this malformed XML at target: %3C%3Fxml%20version%3D%271.0%27%20%3F%3E%3Csvg%20xmlns%3D%27http%...
– Dereckson
Feb 13 '13 at 19:50
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Controlling a USB power supply (on/off) with Linux
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Note. The information in this answer is relevant for the older kernels (up to 2.6.32). See tlwhitec's answer for the information on the newer kernels.
# disable external wake-up; do this only once
echo disabled > /sys/bus/usb/devices...
Converting String array to java.util.List
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Understand homebrew and keg-only dependencies
...les in /usr/local/Cellar. That's done automatically by brew install when a formula specifies keg-only dependencies.
Formulas that specify keg-only dependencies make sure that the equivalent system libraries are not used. Your installation of vips is linked against a specific version of pixman in /u...
nuget 'packages' element is not declared warning
...-8" ?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified"
targetNamespace="urn:packages" xmlns="urn:packages">
<xs:element name="packages">
<xs:complexType>
<xs:sequence>
<xs:element name="package" maxOccurs="...
How does the HyperLogLog algorithm work?
...le. Assume you have two elements and your hash function which gives values form 0 to 2^10 produced 2 values: 344 and 387. You decided to have 16 buckets. So you have:
0101 011000 bucket 5 will store 1
0110 000011 bucket 6 will store 4
By having more buckets you decrease the variance (you use sl...