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Best way to reverse a string
...methods that have been posted will corrupt it, because you cannot swap the order of high and low surrogate code units when reversing the string. (More information about this can be found on my blog.)
The following code sample will correctly reverse a string that contains non-BMP characters, e.g., "...
IN vs OR in the SQL WHERE Clause
...search. I would imagine that OR evaluates them one by one in no particular order. So IN is faster in some circumstances.
The best way to know is to profile both on your database with your specific data to see which is faster.
I tried both on a MySQL with 1000000 rows. When the column is indexed t...
The difference between fork(), vfork(), exec() and clone()
...standings if you think after forking there is an implicit notion of serial order. Forking creates a new process and then returns control to both processes (each returning a different pid) - the operating system can schedule the new process to run in parallel if such a thing makes sense (e.g. multipl...
How does mockito when() invocation work?
...method interception, and a shared instance of the MockingProgress class in order to determine whether an invocation of a method on a mock is for stubbing or replay of an existing stubbed behavior rather than passing information about stubbing via the return value of a mocked method.
A mini-analysi...
Fastest way to determine if an integer is between two integers (inclusive) with known sets of values
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WOW!!! This resulted in an order of magnitude improvement in my app for this specific line of code. By precomputing upper-lower my profiling went from 25% time of this function to less than 2%! Bottleneck is now addition and subtraction operations, but...
How to add a custom button state
...ableState" function, at least the solution works well as is, in my case
In order to use your custom class in a layout xml file, you will have to specify the fully qualified name (e.g. com.mydomain.mypackage.FoodButton)
You can as weel mix-up standard states (e.g. android:pressed, android:enabled, an...
How should I use try-with-resources with JDBC?
...
@ArturoTena yes - the order is guaranteed
– Jeanne Boyarsky
Sep 25 '13 at 0:05
2
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Add Bootstrap Glyphicon to Input Box
... Bootstrap in a second, but here's the fundamental CSS concepts in play in order to do this yourself. As beard of prey points out, you can do this with CSS by absolutely positioning the icon inside of the input element. Then add padding to either side so the text doesn't overlap with the icon.
So...
What's the cleanest way of applying map() to a dictionary in Swift?
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With Swift 5, you can use one of the five following snippets in order to solve your problem.
#1. Using Dictionary mapValues(_:) method
let dictionary = ["foo": 1, "bar": 2, "baz": 5]
let newDictionary = dictionary.mapValues { value in
return value + 1
}
//let newDictionary = dict...
Incrementing in C++ - When to use x++ or ++x?
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@BeowulfOF: The answer implies an order which doesn't exist. There is nothing in the standard to say when the increments take place. The compiler is entitled to implement "x += i++" as: int j = i; i=i+1 ; x += j;" (ie. 'i' incremented before "processing th...