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How to write DataFrame to postgres table?
...s 0.14 (released end of May 2014), postgresql is supported. The sql module now uses sqlalchemy to support different database flavors. You can pass a sqlalchemy engine for a postgresql database (see docs). E.g.:
from sqlalchemy import create_engine
engine = create_engine('postgresql://scott:tiger@lo...
How bad is shadowing names defined in outer scopes?
...t as yadda but miss one of the places it is used in the function's body... Now data refers to the global, and you start having weird behaviour - where you would have a much more obvious NameError if you didn't have a global name data.
Also remember that in Python everything is an object (including...
Swift native base class or NSObject
...hich extent runtime introspection will be added to the language, I do not know. Method interception will likely become only possible if the method explicitly allows it. This is my guess, but only the language designers within Apple really know where they are really heading.
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Trim trailing spaces in Xcode
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We now have some basic Xcode 4 support. See our new plugin
– dmaclach
Nov 13 '11 at 5:48
1
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Why is using “for…in” for array iteration a bad idea?
...mewhere deep in your JavaScript library...
Array.prototype.foo = 1;
// Now you have no idea what the below code will do.
var a = [1, 2, 3, 4, 5];
for (var x in a){
// Now foo is a part of EVERY array and
// will show up here as a value of 'x'.
console.log(x);
}
/* Will disp...
How can I get “Copy to Output Directory” to work with Unit Tests?
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This is true... I just enabled it and now the attribute works. Thanks!
– Miguel Angelo
Dec 26 '11 at 18:16
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Rails: fields_for with index?
... Rails 4.0.2+ users should check out Ben's answer as index is now built into the builder.
– notapatch
Oct 10 '14 at 10:29
1
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What is the difference between varchar and nvarchar?
... and Unicode is the cure for codepage problems. With cheap disk and memory nowadays, there is really no reason to waste time mucking around with code pages anymore.
All modern operating systems and development platforms use Unicode internally. By using nvarchar rather than varchar, you can avoid do...
Is it possible to use jQuery .on and hover?
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@soupy1976 Edited my answer, it now takes into account elements populated with JavaScript.
– Sethen
Dec 11 '12 at 17:21
1
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List of Rails Model Types
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I think this might be a more accurate link, now api.rubyonrails.org/classes/ActiveRecord/ConnectionAdapters/…
– Randy Burgess
Aug 12 '13 at 21:42
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