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MySQL “NOT IN” query
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Thanks for the comment @Basti! Spent a lot of time trying to understand why the query wasn't working as expected.
– gvas
Mar 23 '16 at 2:17
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Why is the time complexity of both DFS and BFS O( V + E )
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According to your answer, won't the complexity become O(V+2E)? Since every edge might have a common edge with another edge?
– karansky
Apr 30 '17 at 9:17
2
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package R does not exist
I'm getting the dreaded package R does not exist, it's killing me.
The code is fine I have apps in the market running the code.
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In a bootstrap responsive page how to center a div
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UPDATE for Bootstrap 4
Simpler vertical grid alignement with flex-box
@import url('https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css');
html,
body {
height: 100%
}
<div class="h-100 row align-items-center">
<div class="col" ...
How do I clone a job in Jenkins?
...eed to clone the existing jobs pointing to the other branch so that this same workflow occurs and builds are performed on every commit. Can somebody explain how I would clone these jobs? I don't seem to see a way to do it through the UI nor can I even see a way to list the jobs out through the UI.
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Sum a list of numbers in Python
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Question 1: So you want (element 0 + element 1) / 2, (element 1 + element 2) / 2, ... etc.
We make two lists: one of every element except the first, and one of every element except the last. Then the averages we want are the averages of each pair taken...
How do you move a file?
... Or another way to say it: svn move <current path/filename> <destination path/filename>
– Joe
May 30 '19 at 19:34
add a comment
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How to insert a SQLite record with a datetime set to 'now' in Android application?
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You cannot use the datetime function using the Java wrapper "ContentValues". Either you can use :
SQLiteDatabase.execSQL so you can enter a raw SQL query.
mDb.execSQL("INSERT INTO "+DATABASE_TABLE+" VALUES (null, datetime()) ");
Or the java dat...
Change from SQLite to PostgreSQL in a fresh Rails project
...tabase.yml to this instead of using the out of the box sqlite one:
development:
adapter: postgresql
encoding: utf8
database: project_development
pool: 5
username:
password:
test: &TEST
adapter: postgresql
encoding: utf8
database: project_test
pool: 5
username:
passwor...