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How to check iOS version?
...) {}
In Objective-C, you need to check the system version and perform a comparison.
[[NSProcessInfo processInfo] operatingSystemVersion] in iOS 8 and above.
As of Xcode 9:
if (@available(iOS 9, *)) {}
The full answer …
In Objective-C, and Swift in rare cases, it's better to avoid relying...
Why is there no String.Empty in Java?
...in memory at runtime. I'm not entirely sure why String.EMPTY would save on compile time, in fact I think it would be the latter.
Especially considering Strings are immutable, it's not like you can first get an empty String, and perform some operations on it - best to use a StringBuilder (or StringB...
Recursive lambda functions in C++11
...++11. I am writing the following recursive lambda function, but it doesn't compile.
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What does threadsafe mean?
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Please avoid link only answers as it may become bad anytime in future.
– akhil_mittal
Aug 23 '15 at 5:40
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Disable all table constraints in Oracle
How can I disable all table constrains in Oracle with a single command?
This can be either for a single table, a list of tables, or for all tables.
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Find the files existing in one directory but not in the other [closed]
... files existing in one directory but not in the other, I tried to use this command:
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How to detect if a variable is an array
...IE6?), the "instanceof" operator leaked a lot of memory when run against a COM object (ActiveXObject). Have not checked JS 5.7 or JS 5.8, but this may still hold true.
– James Hugard
Jun 29 '09 at 17:42
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Environment variables for java installation
...plaining the rationale behind all these environment variables.
Optional recommendations
Add an user environment variable JAVA_TOOL_OPTIONS with value -Dfile.encoding="UTF-8". This ensures that Java (and tools such as Maven) will run with a Charset.defaultCharset() of UTF-8 (instead of the default...
How to determine day of week by passing specific date?
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junit & java : testing non-public methods [duplicate]
...ests in the same package as the classes they're testing. This is a fairly common practice.
You can test protected methods from unit tests in another package by creating a subclass of the class under test that overrides the methods you want to test as public, and having those overridden methods call...