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Why am I getting this error: No mapping specified for the following EntitySet/AssociationSet - Entit

...s library. Shouldn't it be a warning or something? To prevent this error, All you have to do after inserting a new entity is to Generate Database From Model again. That will update the SSDL and fix the mappings. EDIT If you are not using model-first and you "update from database", you will also h...
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How to create P12 certificate for iOS distribution

...rom your hard drive Click Generate Click Download to get the file C. Install .cer and generate .p12 certificate Find .cer file you’ve downloaded and double-click Set Login drop-down to “login" and Click Add Open up KeyChain Access and you'll find profile created in Step A You can expand “p...
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How to parse/format dates with LocalDateTime? (Java 8)

..."1986-04-08T12:30:00". The parse() and format() methods are available for all date/time related objects (e.g. LocalDate or ZonedDateTime) share | improve this answer | follo...
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What is the difference between an expression and a statement in Python?

...s, where operators include arithmetic and boolean operators, the function call operator () the subscription operator [] and similar, and can be reduced to some kind of "value", which can be any Python object. Examples: 3 + 5 map(lambda x: x*x, range(10)) [a.x for a in some_iterable] yield 7 Stat...
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Why are Python lambdas useful? [closed]

...ut lambda functions? Like lambda x: x**2 + 2*x - 5 Those things are actually quite useful. Python supports a style of programming called functional programming where you can pass functions to other functions to do stuff. Example: mult3 = filter(lambda x: x % 3 == 0, [1, 2, 3, 4, 5, 6, 7, 8, 9])...
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Best practices for reducing Garbage Collector activity in Javascript

I have a fairly complex Javascript app, which has a main loop that is called 60 times per second. There seems to be a lot of garbage collection going on (based on the 'sawtooth' output from the Memory timeline in the Chrome dev tools) - and this often impacts the performance of the application. ...
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How to join int[] to a character separated string in .NET?

...formance. Join method needs to know the size of the data to effectively preallocate necessary amount of memory. Here is a part of internal implementation of String.Join method: // length computed from length of items in input array and length of separator string str = FastAllocateString(length); f...
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Modelling an elevator using Object-Oriented Analysis and Design [closed]

... This is one of them; unfortunately, my OOP professor in college never actually gave an answer to it, and so I've been wondering. ...
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Is it feasible to do (serious) web development in Lisp? [closed]

...e almost any kind of application in almost any programming language, especially in such a powerful one as Lisp (be it Scheme or Common Lisp). But is it practical to use it for web development? If so, what should be a good starting point? Where can be found the proper resources (tools, libraries, doc...
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Creating an iframe with given HTML dynamically

...cross browsers and it's only over a year after I answered that someone actually complained. No it's not cross browser. But let's be honest if you want code quality there is probably a much cleaner solution than using a iframe in the first place :) – GillesC N...