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Which is more preferable to use: lambda functions or nested functions ('def')?
...a def instead. defs are just syntactic sugar for an assignment, so the result is the same, and they are a lot more flexible and readable.
lambdas can be used for use once, throw away functions which won't have a name.
However, this use case is very rare. You rarely need to pass around unnamed func...
How to make a valid Windows filename from an arbitrary string?
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InvalidFileNameChars = new char[] { '"', '<', '>', '|', '\0', '\x0001', '\x0002', '\x0003', '\x0004', '\x0005', '\x0006', '\a', '\b', '\t', '\n', '\v', '\f', '\r', '\x000e', '\x000f', '\x0010', '\x0011', '\x0012', '\x0013', '\x0014', '\x0015', '\x0016',...
Java 8 stream reverse order
...erly, requiring an unchecked cast.
@SuppressWarnings("unchecked")
static <T> Stream<T> reverse(Stream<T> input) {
Object[] temp = input.toArray();
return (Stream<T>) IntStream.range(0, temp.length)
.mapToObj(i -> temp[temp.length - ...
how do I initialize a float to its max/min value?
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You can use std::numeric_limits which is defined in <limits> to find the minimum or maximum value of types (As long as a specialization exists for the type). You can also use it to retrieve infinity (and put a - in front for negative infinity).
#include <limits>
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How can I install from a git subdirectory with pip?
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In general, when working with shell scripts, use double quotes around arguments to be on the safe side. for more best practices see: shellcheck.net or github.com/koalaman/shellcheck
– Erik Aronesty
Jan 17 '19 at 15:38
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What does Class mean in Java?
...Sorry, it's probably a duplicate but I couldn't find an example with the <?> on the end.
6 Answers
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CSS Selector that applies to elements with two classes
...lack;
}
.foo.bar {
color: red;
}
Output on supported browsers is:
<div class="foo">Hello Foo</div> <!-- Not selected, black text [1] -->
<div class="foo bar">Hello World</div> <!-- Selected, red text [2] -->
<div class="bar">Hello Bar</div&g...
Overflow to left instead of right
...you need to wrap the contained elements in another element with direction: ltr rule to reverse the effect.
– Óscar Gómez Alcañiz
Oct 25 '16 at 8:20
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How to specify id when uses include in layout xml file
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Specify the ID in the <include>
<include layout="@layout/test" android:id="@+id/test1" />
Then use two findViewById to access fields in the layout
View test1View = findViewById(R.id.test1);
TextView test1TextView = (TextView) test1V...
SparseArray vs HashMap
...project
HashMap can be replaced by the following:
SparseArray <Integer, Object>
SparseBooleanArray <Integer, Boolean>
SparseIntArray <Integer, Integer>
SparseLongArray <Integer, Long>
LongSparseArray <Long, Object>
LongSparseLongArray <...