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What is the 'instanceof' operator used for in Java?
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@FelixS You need to read the answer again. The answer is about Object indirect = ...; if (indirect instanceof Something). It's not about if (literal instanceof Something) like you seem to be assuming.
– Erwin Bolwidt
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How important is the order of columns in indexes?
...alues, while Column 1 above does negate 1/2 the possibilities, the index already knows which index page to go straight to for the Column2 value, it does not necessary need Column 1 to narrow down the set.
– CodeCowboyOrg
Mar 23 '15 at 17:57
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What is the usefulness of PUT and DELETE HTTP request methods?
I have read a lot stuff about this but not able to get the conclusion on this topic.
4 Answers
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How to create our own Listener interface in android?
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How to pass the Listener Object if our Button is already in the layout rather we don't used the MyButton m = new MyButton(this); way to create the object of Button.
– Qadir Hussain
Dec 7 '15 at 7:25
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Order of serialized fields using JSON.NET
...erty attribute on the class properties that you want to set the order for. Read the JsonPropertyAttribute order documentation for more information.
Pass the JsonProperty an Order value and the serializer will take care of the rest.
[JsonProperty(Order = 1)]
This is very similar to the
DataMe...
Haml: Control whitespace around text
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Nice timing, I just found out about these by reading Haml's source. Apparently they've been around for a while. Odd that they don't document them in the main reference page...
– Groxx
Jun 10 '11 at 23:51
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What's the purpose of using braces (i.e. {}) for a single-line if or loop?
I'm reading some lecture notes of my C++ lecturer and he wrote the following:
23 Answers
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DateTime vs DateTimeOffset
...not the (utc time, offset) pair. In other words, the offset from UTC is already reflected in the local time. To convert back to utc, invert the sign of the offset and apply it to the local time.
– Matt Johnson-Pint
Feb 27 '14 at 20:15
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Javascript AES encryption [closed]
...IT3
a late addition: Javascript Cryptography considered harmful. Worth the read.
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Why do 64-bit DLLs go to System32 and 32-bit DLLs to SysWoW64 on 64-bit Windows?
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-- dllLocation
The code that uses your dlls reads the registry, then dynamically links to the dlls in that location.
The above is the smart way to go.
You do not ever install your dlls, or third party dlls into \system32\ or \syswow64. If you have to statically load,...