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Java 8 stream reverse order
...t;Integer> list = Arrays.asList(1,2,3,4);
list.stream()
.boxed() // Converts Intstream to Stream<Integer>
.sorted(Collections.reverseOrder()) // Method on Stream<Integer>
.forEach(System.out::println);
...
Does MongoDB's $in clause guarantee order
...ocuments are retrieved. That of course will be the natural order or by the selected index order as shown.
If you need to preserve this order, then you basically have two options.
So let's say that you were matching on the values of _id in your documents with an array that is going to be passed in ...
Java Class.cast() vs. cast operator
...ce and no conversion ever happens to objects (only primitive values can be converted using this syntax).
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In C# what is the difference between ToUpper() and ToUpperInvariant()?
...fferent cultures. The most known example is the Turkish example, for which converting lowercase latin "i" to uppercase, doesn't result in a capitalized latin "I", but in the Turkish "I".
As for me it was confusing even with the above picture (source), I wrote a program (see source code below) to se...
What's the difference between := and = in Makefile?
...ever, if the variable GCC is reassigned i.e
GCC=c++ then the ${CC} will be converted to c++ -W after the reassignment.
Conditional assignment ?=
Conditional assignment assigns a value to a variable only if it does not have a value
Appending +=
Assume that CC = gcc then the appending operator...
Working with time DURATION, not time of day
...rmula, =A1, then highlight the cell, go into the formatting dropdown menu, select Custom, and type in dddd.
Repeat all this in the row below.
Finally, say you want to display that duration in cell D2. Enter the formula, =(a2+b2)-(a1+b1). If you want this displayed as "22h 30m", select the cell, ...
Which access modifiers are implied when not specified?
...ublic. Only transpiling will throw errors. Both public and private will be converted to <Object>.prototype.funcName
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Work on a remote project with Eclipse via SSH
...pective in Eclipse:
Define a new connection and choose SSH Only from the Select Remote System Type screen in the New Connection dialog.
Enter the connection information then choose Finish.
Connect to the new host. (Assumes SSH keys are already setup.)
Once connected, drill down into the host's Sft...
String concatenation in Ruby
...he given object to str. If the object is a Fixnum between 0 and 255, it is converted to a character before concatenation.
so difference is in what becomes to first operand (<< makes changes in place, + returns new string so it is memory heavier) and what will be if first operand is Fixnum (&l...
getting date format m-d-Y H:i:s.u from milliseconds
...pproach. Rather than work to create a high-precision numeric date/time, I convert the microsecond value to a string, remove the 0, and add it to the end of the date/time string. I can easily trim the number of decimals by adjusting the string length parameter; here I use 4 to get milliseconds, but...