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Delete all files in directory (but not directory) - one liner solution
...Stream
This deletes only files from ABC (sub-directories are untouched):
Arrays.stream(new File("C:/test/ABC/").listFiles()).forEach(File::delete);
This deletes only files from ABC (and sub-directories):
Files.walk(Paths.get("C:/test/ABC/"))
.filter(Files::isRegularFile)
...
How to show line number when executing bash script
...e the function was called, try $BASH_LINENO. Note that this variable is an array.
For example:
#!/bin/bash
function log() {
echo "LINENO: ${LINENO}"
echo "BASH_LINENO: ${BASH_LINENO[*]}"
}
function foo() {
log "$@"
}
foo "$@"
See here for details of Bash variables.
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What is the most efficient/elegant way to parse a flat table into a tree?
...where each object has a children collection and store them all in an assoc array (/hashtable) where the Id is the key. And blitz through the collection once, adding the children to the relevant children fields. Simple.
But because you're being no fun by restricting use of some good OOP, I'd probabl...
How to construct a std::string from a std::vector?
...definitely - however, the current standard states "Modifying the character array accessed through data has undefined behavior."
– Riot
Apr 26 '16 at 16:48
...
d3 axis labeling
...tAxis)
.ticks(3)
.tickValues([100, 200, 300]) //specify an array here for values
.orient("bottom");
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Check string for palindrome
... done.
public static void main(String[] args) {
for (String testStr : Arrays.asList("testset", "none", "andna", "haah", "habh", "haaah")) {
System.out.println("testing " + testStr + " is palindrome=" + isPalindrome(testStr));
}
}
public static boolean isPalindrome(String str) {
...
Adding code to a javascript function programmatically
...n actual Arguments object as the second arg for .apply(). But if it was an Array-like object like a jQuery object for example, then yes, some browsers would throw an error
– user1106925
Mar 22 '12 at 21:55
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How to remove all the occurrences of a char in c++ string
... characters i.e, if the input is aaabbcc then the output will be abc. (the array must be sorted for this code to work)
cin >> s;
ans = "";
ans += s[0];
for(int i = 1;i < s.length();++i)
if(s[i] != s[i-1])
ans += s[i];
cout << ans << endl;
...
Naming convention for Scala constants?
... {
val lowerConst = "lower"
val UpperConst = "UPPER"
def main(args: Array[String]) {
for (i <- Seq(lowerConst, UpperConst, "should mismatch.").map(Option.apply)) {
print("Input '%s' results in: ".format(i))
i match {
case Some(UpperConst) => println("UPPER!!!")
...
Can I set enum start value in Java?
... enum of sequential integers (similar to a C++ enum), for an index into an array or something, be to write: enum Ids { NAME(0), AGE(1), HEIGHT(2), WEIGHT(3); } Thank you, -bn
– bn.
Aug 13 '09 at 19:35
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