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Why is a combiner needed for reduce method that converts type in java 8
I'm having trouble fully understanding the role that the combiner fulfils in Streams reduce method.
4 Answers
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Test whether a list contains a specific value in Clojure
...se for sets (which can be thought of as making no distinction between keys and values), maps (so (contains? {:foo 1} :foo) is true) and vectors (but note that (contains? [:foo :bar] 0) is true, because the keys here are indices and the vector in question does "contain" the index 0!).
To add to the ...
What does “WARN Could not determine content-length of response body.” mean and how to I get rid of i
...Core's members:
https://twitter.com/luislavena/status/108998968859566080
And the answer:
https://twitter.com/tenderlove/status/108999110136303617
ya, it's fine. Need to clean it up, but nothing is being hurt.
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Adding information to an exception?
...ay, you'd need to do something along these lines to preserve the traceback and not hardcode the type of exception in function bar(). Also note that there will be the line:
During handling of the above exception, another exception occurred:
in the traceback messages displayed.
# for Python 3.x
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C# vs Java Enum (for those new to C#)
I've been programming in Java for a while and just got thrown onto a project that's written entirely in C#. I'm trying to come up to speed in C#, and noticed enums used in several places in my new project, but at first glance, C#'s enums seem to be more simplistic than the Java 1.5+ implementation....
django.core.exceptions.ImproperlyConfigured: Error loading MySQLdb module: No module named MySQLdb
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I am using virtual env, and i have installed mysql, django... however when i do python manage.py syncdb It gives me the same error that i have posted
– getitstarted
Mar 9 '13 at 23:13
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How to get the current time in milliseconds from C in Linux?
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(intmax_t)s, ms);
}
If your goal is to measure elapsed time, and your system supports the "monotonic clock" option, then you should consider using CLOCK_MONOTONIC instead of CLOCK_REALTIME.
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How do I delete an Azure storage account containing a leased blob?
...virtual machines. In the end, I deleted the virtual machine (successfully) and tried to delete the associated storage account.
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Reusable library to get human readable version of file size?
..., 'Yi', suffix)
Supports:
all currently known binary prefixes
negative and positive numbers
numbers larger than 1000 Yobibytes
arbitrary units (maybe you like to count in Gibibits!)
Example:
>>> sizeof_fmt(168963795964)
'157.4GiB'
by Fred Cirera
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Initialize parent's protected members with initialization list (C++)
...er to be default initialized.
From C++0x draft:
12.6.2 Initializing bases and members
2 Names in a mem-initializer-id are
looked up in the scope of the
constructor’s class and, if not found
in that scope, are looked up in the
scope containing the constructor’s
definition. [ Note: if the
constru...