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Querying DynamoDB by date
...ER IS WRONG. His original answer is right but his updated answer is not. Read Warren Parad's answer below. It's correct.
– Ryan Shillington
May 5 '17 at 15:16
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What is the difference between an int and an Integer in Java and C#?
I was reading More Joel on Software when I came across Joel Spolsky saying something about a particular type of programmer knowing the difference between an int and an Integer in Java/C# (Object-Oriented Programming Languages).
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How to prevent robots from automatically filling up a form?
...ugh anti-spamming mechanism to prevent automatically generated input. I've read that techniques like captcha, 1+1=? stuff work well, but they also present an extra step impeding the free quick use of the application (I'm not looking for anything like that please).
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What is a monad?
... of built-in functions which interface with the outside world: putStrLine, readLine and so on. These functions are called “impure” because they either cause side effects or have non-deterministic results. Even something simple like getting the time is considered impure because the result is non-...
LEFT OUTER joins in Rails 3
...you're using it in. The Rails guide explains it better than I could if you read the entirety of section 12: guides.rubyonrails.org/…
– WuTangTan
Feb 20 '13 at 15:50
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C++ semantics of `static const` vs `const`
...laration and initialization are separated.)
Remember, in C++, const means read-only, not constant. If you have a pointer-to-const then other parts of the program may change the value while you're not looking. If the variable was defined with const, then no one can change it after initialization b...
MySQL: multiple tables or one table with many columns?
... better (since it reduces the amount of work the database needs to do when reading data). I'd highly recommend making your data as normalized as possible to start out, and only denormalize if you're aware of performance problems in specific queries.
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What is tail call optimization?
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If you want to learn more about this, I suggest reading the first chapter of Structure and Interpretation of Computer Programs.
– Kyle Cronin
Nov 22 '08 at 16:05
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How to get unique device hardware id in Android? [duplicate]
...Add this is manifest
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
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Thymeleaf: how to use conditionals to dynamically add/remove a CSS class
...parsing org.xml.sax.SAXParseException: Attribute "th:classappend" was already specified for element "img".
– user1053510
Sep 29 '17 at 13:38
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