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type object 'datetime.datetime' has no attribute 'datetime'

... Datetime is a module that allows for handling of dates, times and datetimes (all of which are datatypes). This means that datetime is both a top-level module as well as being a type within that module. This is confusing. Your er...
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How can I get the behavior of GNU's readlink -f on a Mac?

...t symlink cycles. A simple way to do this would be to count the number of times you go around the loop and fail if you hit an improbably large number, such as 1,000. EDITED to use pwd -P instead of $PWD. Note that this script expects to be called like ./script_name filename, no -f, change $1 to $...
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Given a view, how do I get its viewController?

...ewController classes and PureMVC's View and Mediator classes - most of the time, the View class doesn't need to know about its MVC handler/interface (UIViewController/Mediator). – Dimitar Dimitrov Sep 29 '09 at 8:41 ...
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How can I generate a unique ID in Python? [duplicate]

...e uuidlib forked without closing FDs, so the TCP sockets I had open at the time would never be closed and I couldn't reopen the port later. I'd have to manually kill uuidd as root. I worked around this by setting uuid._uuid_generate_time and uuid._uuid_generate_random to None so the uuid module ne...
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What are the differences between the different saving methods in Hibernate?

... differences between persist and save. It looks like the difference is the time the INSERT statement is ultimately executed. Since save does return the identifier, the INSERT statement has to be executed instantly regardless of the state of the transaction (which generally is a bad thing). Persist w...
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Servlet for serving static content

...erialVersionUID = 1L; private static final long ONE_SECOND_IN_MILLIS = TimeUnit.SECONDS.toMillis(1); private static final String ETAG_HEADER = "W/\"%s-%s\""; private static final String CONTENT_DISPOSITION_HEADER = "inline;filename=\"%1$s\"; filename*=UTF-8''%1$s"; public static fin...
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How does one escape backslashes and forward slashes in VIM find/search?

...ad: :%s@<doc/>@<cat\\>@ This saves you all typing all those time-consuming, confusing backslashes in patterns with a ton of slashes. From the documentation: Instead of the / which surrounds the pattern and replacement string, you can use any other single-byte character, but no...
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Replace non-numeric with empty string

...e(phone, ""); } or within a class to avoid re-creating the regex all the time: private static Regex digitsOnly = new Regex(@"[^\d]"); public static string CleanPhone(string phone) { return digitsOnly.Replace(phone, ""); } Depending on your real-world inputs, you may want some additional...
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Get the time difference between two datetimes

... more envolving Dates with momentjs. But embarrassingly, I'm having a hard time trying to do something that seems simple: geting the difference between 2 times. ...
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C++ performance vs. Java/C#

...ter because the JIT compiler -- a compiler that compiles your IL the first time it's executed -- can make optimizations that a C++ compiled program cannot because it can query the machine. It can determine if the machine is Intel or AMD; Pentium 4, Core Solo, or Core Duo; or if supports SSE4, etc. ...