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docker error: /var/run/docker.sock: no such file or directory
...g boot2docker as every command passed into the boot2docker VM runs as root by default.
You're seeing the error when you're running as sudo because sudo doesn't have the DOCKER_HOST env set, only your user does.
You can confirm this by doing a:
$ env
Then a
$ sudo env
And looking for DOCKER_H...
Help with C# generics error - “The type 'T' must be a non-nullable value type”
...t; means, and realise that it doesn't already have the constraint required by Nullable<T> itself. In other words, you could try to call:
CoalesceMax<string>(...)
which wouldn't make sense, as Nullable<string> isn't valid.
...
What is “function*” in JavaScript?
...s programmatically so that they can be passed around and elements accessed by index without having to compute the entire sequence (possibly infinite in size) beforehand.
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Backbone View: Inherit and extend events from parent
...ted. the only context used is this versus having to call the parent class by instance name. thank you very much for this.
– jessie james jackson taylor
Oct 16 '14 at 1:42
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How can I disable the Maven Javadoc plugin from the command line?
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The Javadoc generation can be skipped by setting the property maven.javadoc.skip to true [1], i.e.
-Dmaven.javadoc.skip=true
(and not false)
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Assert an object is a specific type
...n the exact type of the object. This solutions does not that (as mentioned by @EircG above) and it has even been provided by the user originally asking the question, so definitely not the "correct" answer imo. For the correct answer, please check the Franklin Yu answer.
– kekk...
jQuery - setting the selected value of a select control via its text description
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Select by description for jQuery v1.6+
var text1 = 'Two';
$("select option").filter(function() {
//may want to use $.trim in here
return $(this).text() == text1;
}).prop('selected', true);
<script src="https://cdnjs...
How to loop over directories in Linux?
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By the way: Note, that all answers will find hidden folders, too (that is, folders starting with a dot)! If you don't want this, add ` -regex '\./[^\.].*'` before the printf or exec options.
– Boldewyn
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Never seen before C++ for loop
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By the way, Thomas may have been confused by the use of the comma too, it's very different than the semi-colon, it lets you do multiple things in one section of the for loop (in this case, it initialized two variables). Last...
Ignoring time zones altogether in Rails and PostgreSQL
... in PostgreSQL
Internal storage and epoch
Internally, timestamps occupy 8 bytes of storage on disk and in RAM. It is an integer value representing the count of microseconds from the Postgres epoch, 2000-01-01 00:00:00 UTC.
Postgres also has built-in knowledge of the commonly used UNIX time counting...