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Diff output from two programs without temporary files
... hang or use a temporary file on disk. You also cannot use psub for output from your command.
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What is the difference between persist() and merge() in JPA and Hibernate?
...peration is
cascaded to entities referenced by X,
if the relationships from X to these
other entities are annotated with the
cascade=PERSIST or cascade=ALL
annotation element value or specified
with the equivalent XML descriptor
element.
If X is a removed entity,
it becomes managed...
How do I iterate through table rows and cells in JavaScript?
...policy. You could always just copy-n-paste the relevant functions you need from jQuery to your own application code. Unless there's a policy against using other people's code online, but then you wouldn't be here.
– Clinton
Apr 1 '11 at 0:39
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How to compare DateTime in C#?
...wer is better for the OP, but yours is better for some people who got here from google (self included).
– levininja
Apr 14 '17 at 18:46
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Change column type from string to float in Pandas
...ataFrame or Series to have. It's very versatile in that you can try and go from one type to the any other.
Basic usage
Just pick a type: you can use a NumPy dtype (e.g. np.int16), some Python types (e.g. bool), or pandas-specific types (like the categorical dtype).
Call the method on the object you ...
“Origin null is not allowed by Access-Control-Allow-Origin” error for request made by application ru
I'm developing a page that pulls images from Flickr and Panoramio via jQuery's AJAX support.
17 Answers
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How bad is shadowing names defined in outer scopes?
...r score referring (like in closures) explicit. Note that this is different from shadowing, as it explicitly does not shadow variables from outside.
– Felix D.
Oct 7 '19 at 8:21
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Understanding __get__ and __set__ and Python descriptors
... that great).
A descriptor is defined on a class, but is typically called from an instance. When it's called from an instance both instance and owner are set (and you can work out owner from instance so it seems kinda pointless). But when called from a class, only owner is set – which is why it's...
How do I make HttpURLConnection use a proxy?
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This is fairly easy to answer from the internet. Set system properties http.proxyHost and http.proxyPort. You can do this with System.setProperty(), or from the command line with the -D syntax.
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Postgres could not connect to server
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Had a similar problem; a pid file was blocking postgres from starting up. To fix it:
$ rm /usr/local/var/postgres/postmaster.pid
$ brew services restart postgresql
and then all is well.
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