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Save PL/pgSQL output from PostgreSQL to a CSV file
... newlines in field values? The COPY or \copy approaches handle correctly (convert to standard CSV format); does this?
– Wildcard
Jan 7 '17 at 4:19
...
Does List guarantee insertion order?
...ly the List could re-order the collection any time after an item was added and that statement would still be valid. I don't want to get nit-picky about it, but if a manager or QA really made me defend this position, I wouldn't feel very confident with just that quote.
– tehDorf...
Best way to implement request throttling in ASP.NET MVC?
...t;remarks>
/// We'll be inserting a Cache record based on this name and client IP, e.g. "Name-192.168.0.1"
/// </remarks>
public string Name { get; set; }
/// <summary>
/// The number of seconds clients must wait before executing this decorated route again.
//...
Node.js: Difference between req.query[] and req.params
...the URL and it's treated as a text.
If we need to work with numbers, and convert query statements from text to number, we can simply add a plus sign in front of statement.
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Google Guice vs. PicoContainer for Dependency Injection
...ues and a few pages don't work at all. It looks like the pages were auto-converted from the older content.
http://picocontainer.codehaus.org/ Which seems frozen in time at version 2.10.2 - It would be really nice if the pages said something like "hey, you're looking at an old web site!"
http://doc...
add a string prefix to each value in a string column using Pandas
...
If you load you table file with dtype=str
or convert column type to string df['a'] = df['a'].astype(str)
then you can use such approach:
df['a']= 'col' + df['a'].str[:]
This approach allows prepend, append, and subset string of df.
Works on Pandas v0.23.4, v0.24.1. ...
How to fix corrupted git repository?
... DropBox, SpiderOak, or any other cloud disk), you can do the following:
Convert your .git folder into a single "bundle" git file by using: git bundle create my_repo.git --all, then it should work just the same as before, but since everything is in a single file you won't risk the synchronization ...
Mean per group in a data.frame [duplicate]
...0.33333
#3 Cat 2 44.66667 54.00000
Using data.table:
# At first, I convert the data.frame to data.table and then I group it
setDT(d)
d[, .(Rate1 = mean(Rate1), Rate2 = mean(Rate2)), by = .(Name)]
# Name Rate1 Rate2
#1: Aira 16.33333 47.00000
#2: Ben 31.33333 50.33333
#3: Cat 44.66...
How does RewriteBase work in .htaccess
...s a real rule I used to ensure that URLs have a trailing slash. This will convert
http://www.example.com/~new/page
to
http://www.example.com/~new/page/
By having the RewriteBase there, you make the relative path come off the RewriteBase parameter.
...
Linq to Sql: Multiple left outer joins
...where you'd be better off using DataContext.ExecuteCommand(...) instead of converting to linq.
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