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How to change highlighted occurrences color in Eclipse's sidebar?
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Right click on the marker and select the only menu item "preferences", this opens the preferences dialog: General/Editors/text Editor/Annotation.
The color of "occurances" is used for the matching items,
"write occurances" for item selected by you.
T...
Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '=
...CIT) and (utf8_unicode_ci,IMPLICIT) for operation '='
$this->db->select("users.username as matric_no, CONCAT(users.surname,
' ',
users.first_name, ' ', users.last_name) as fullname")
->join('users', 'users.username=classroom_students.matric_no', 'left')
...
Android Studio: Module won't show up in “Edit Configuration”
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I had similar issue when I selected parent directory of my project, I resolved by Close Project -> Delete Project from Android Studio -> Import Project by selecting right build.gradle file.
Make sure you select right build.gradle file while imp...
AtomicInteger lazySet vs. set
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Cited straight from "JDK-6275329: Add lazySet methods to atomic classes":
As probably the last little JSR166 follow-up for Mustang,
we added a "lazySet" method to the Atomic classes
(AtomicInteger, AtomicReference, etc). This is a n...
GROUP_CONCAT ORDER BY
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You can use ORDER BY inside the GROUP_CONCAT function in this way:
SELECT li.client_id, group_concat(li.percentage ORDER BY li.views ASC) AS views,
group_concat(li.percentage ORDER BY li.percentage ASC)
FROM li GROUP BY client_id
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Which machine learning classifier to choose, in general? [closed]
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Model selection using cross validation may be what you need.
Cross validation
What you do is simply to split your dataset into k non-overlapping subsets (folds), train a model using k-1 folds and predict its performance using the...
Pandas every nth row
...] # Excludes every 3rd row starting from 0
df2 = df[df.index % 3 == 0] # Selects every 3rd raw starting from 0
This arithmetic based sampling has the ability to enable even more complex row-selections.
This assumes, of course, that you have an index column of ordered, consecutive, integers star...
Vagrant error : Failed to mount folders in Linux guest
... box and do sudo ln -s /etc/dnf/dnf.conf /etc/yum.conf, as Fedora switched from yum to dnf. With that, things ran to completion (I think!). Thanks @dadaso.
– J.Z.
Mar 18 '16 at 22:37
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Creating a new user and password with Ansible
...ython one-liner you have above. I had some trouble getting correct output from Python, probably due to my own incompetence and the openssl command worked better.
– Brendan Wood
Dec 12 '13 at 21:17
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Is there a method to generate a UUID with go language
...rectly identify it as version 4. This is done to distinguish random UUIDs from ones generated via other algorithms (e.g. version 1 UUIDs based on your MAC address and time).
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