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:: (double colon) operator in Java 8
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Usually, one would call the reduce method using Math.max(int, int) as follows:
reduce(new IntBinaryOperator() {
int applyAsInt(int left, int right) {
return Math.max(left, right);
}
});
That requires a lot of syntax for just calling Math.max. That's where lambda ...
Custom ImageView with drop shadow
...This is taken from Romain Guy's presentation at Devoxx, pdf found here.
Paint mShadow = new Paint();
// radius=10, y-offset=2, color=black
mShadow.setShadowLayer(10.0f, 0.0f, 2.0f, 0xFF000000);
// in onDraw(Canvas)
canvas.drawBitmap(bitmap, 0.0f, 0.0f, mShadow);
Hope this helps.
NOTES
Do...
How to grep and replace
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This touches every file so file times are modified; and converts line endings from CRLF to LF on Windows.
– jww
Oct 25 '17 at 0:21
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Set NOW() as Default Value for datetime datatype?
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it should work for updates too
Answers by Johan & Leonardo involve converting to a timestamp field. Although this is probably ok for the use case presented in the question (storing RegisterDate and LastVisitDate), it is not a universal solution. See datetime vs timestamp question.
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How to compare binary files to check if they are the same?
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I ended up using hexdump to convert the binary files to there hex representation and then opened them in meld / kompare / any other diff tool. Unlike you I was after the differences in the files.
hexdump tmp/Circle_24.png > tmp/hex1.txt
hexdump /tmp...
What does Expression.Quote() do that Expression.Constant() can’t already do?
...xtremely confusing and bug prone.
Long answer:
Consider the following:
(int s)=>(int t)=>s+t
The outer lambda is a factory for adders that are bound to the outer lambda's parameter.
Now, suppose we wish to represent this as an expression tree that will later be compiled and executed. Wh...
To ARC or not to ARC? What are the pros and cons? [closed]
...W, make sure to use of Xcode to do the transition (Edit > Refactor > Convert to Objective-C ARC). During the process Xcode would do a lot of validation to make sure your code would work and figure out any codes that violates those designing guidelines.
– ZhangChn
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How to use C++ in Go
... linking a small test C++ class with Go
If you wrap you C++ code with a C interface you should be able to call your library with cgo (see the example of gmp in $GOROOT/misc/cgo/gmp).
I'm not sure if the idea of a class in C++ is really expressible in Go, as it doesn't have inheritance.
Here's an...
Are static fields inherited?
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3 in all cases, since the static int total inherited by SomeDerivedClass is exactly the one in SomeClass, not a distinct variable.
Edit: actually 4 in all cases, as @ejames spotted and pointed out in his answer, which see.
Edit: the code in the second ques...
How to sort List of objects by some property
...esComparer implements Comparator<ActiveAlarm> {
@Override
public int compare(ActiveAlarm x, ActiveAlarm y) {
// TODO: Handle null x or y values
int startComparison = compare(x.timeStarted, y.timeStarted);
return startComparison != 0 ? startComparison
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