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Remove duplicated rows
...ase explain to me what is happening with the [,1:3] part of that code? I'm new to R which is why I'm asking what I can only assume is an obvious question.
– user1897691
Dec 20 '12 at 7:24
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Finding duplicate values in MySQL
...you can't get the IDs of the rows with duplicate values? Yes, you can do a new query matching for each duplicate value, but is it possible to simply list the duplicates?
– NobleUplift
Jul 24 '14 at 14:41
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How do I remove all specific characters at the end of a string in PHP?
...ng
– Brock Hensley
Jun 19 '14 at 18:51
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Understanding the map function
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map creates a new list by applying a function to every element of the source:
xs = [1, 2, 3]
# all of those are equivalent — the output is [2, 4, 6]
# 1. map
ys = map(lambda x: x * 2, xs)
# 2. list comprehension
ys = [x * 2 for x in xs...
Push to GitHub without a password using ssh-key
...d it, but I keep asking myself why would Github then advise you to point a new repository's remote end to an http URL by default. I just created a repository from scratch, and I was presented with an option for setting an https remote URL, not a git one.
– Preslav Rachev
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jQuery multiple events to trigger the same function
...to prevent.
– Esger
Jan 21 '16 at 9:51
2
How can I pass parameter in this function?
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Why Response.Redirect causes System.Threading.ThreadAbortException?
When I use Response.Redirect(...) to redirect my form to a new page I get the error:
10 Answers
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Moving decimal places over in a double
...re wondering what it might look like without rounding:
System.out.println(new BigDecimal(0.1));
System.out.println(new BigDecimal(x));
prints:
0.100000000000000005551115123125782702118158340454101562
12.339999999999999857891452847979962825775146484375
In short, rounding is unavoidable for sens...
Querying DynamoDB by date
...ot on some or one of the peers, due to the fact that in most data storages new data is queried more often than old data.
– Knowledge
Jul 10 '17 at 18:56
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UPDATE and REPLACE part of a string
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UPDATE tablename
SET field_name = REPLACE(field_name , 'oldstring', 'newstring')
WHERE field_name LIKE ('oldstring%');
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