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How do I make a column unique and index it in a Ruby on Rails migration?
...umn unique in Ruby on Rails migration script. What is the best way to do it? Also is there a way to index a column in a table?
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Return first N key:value pairs from dict
...ch keys were inserted first.
You can get any n key-value pairs though:
n_items = take(n, d.iteritems())
This uses the implementation of take from the itertools recipes:
from itertools import islice
def take(n, iterable):
"Return first n items of the iterable as a list"
return list(isli...
How to find index of all occurrences of element in array?
...arameter that specifies the index to start searching from, so you can call it in a loop to find all instances of a particular value:
function getAllIndexes(arr, val) {
var indexes = [], i = -1;
while ((i = arr.indexOf(val, i+1)) != -1){
indexes.push(i);
}
return indexes;
}
v...
What are the performance characteristics of sqlite with very large database files? [closed]
I know that sqlite doesn't perform well with extremely large database files even when they are supported (there used to be a comment on the sqlite website stating that if you need file sizes above 1GB you may want to consider using an enterprise rdbms. Can't find it anymore, might be related to an o...
Generating a UUID in Postgres for Insert statement?
...ware of the concept of a UUID and I want to generate one to refer to each 'item' from a 'store' in my DB with. Seems reasonable right?
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How to change max_allowed_packet size
I am having a problem with BLOB fields in my MySQL database - when uploading files larger than approx 1MB I get an error Packets larger than max_allowed_packet are not allowed.
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Keystore type: which one to use?
By looking at the file java.security of my JRE , I see that the keystore type to use by default is set to JKS . Here , there is a list of the keystore types that can be used.
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Getting Git to work with a proxy server - fails with “Request timed out”
How do I get Git to use a proxy server?
19 Answers
19
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How do you deploy your ASP.NET applications to live servers?
...s you use to deploy an ASP.NET web application project ( NOT ASP.NET web site) to production?
13 Answers
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android EditText - finished typing event
I want to catch an event when the user finishes editing EditText.
14 Answers
14
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