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What is the difference between LL and LR parsing?
...eft-to-right, leftmost derivation. That is, we consider the input symbols from the left to the right and attempt to construct a leftmost derivation. This is done by beginning at the start symbol and repeatedly expanding out the leftmost nonterminal until we arrive at the target string. An LR pars...
How to go about formatting 1200 to 1.2k in java
...param n the number to format
* @param iteration in fact this is the class from the array c
* @return a String representing the number n formatted in a cool looking way.
*/
private static String coolFormat(double n, int iteration) {
double d = ((long) n / 100) / 10.0;
boolean isRound = (d ...
converting double to integer in java
...nding, there will not be any fractional parts remaining.
Here are the docs from Math.round(double):
Returns the closest long to the argument. The result is rounded to an integer by adding 1/2, taking the floor of the result, and casting the result to type long. In other words, the result is equal t...
Regular expression to match a dot
Was wondering what the best way is to match "test.this" from "blah blah blah test.this@gmail.com blah blah" is? Using Python.
...
Is there a common Java utility to break a list into batches?
...
Check out Lists.partition(java.util.List, int) from Google Guava:
Returns consecutive sublists of a list, each of the same size (the final list may be smaller). For example, partitioning a list containing [a, b, c, d, e] with a partition size of 3 yields [[a, b, c], [...
Splitting on last delimiter in Python string?
...;> s.rpartition(',')
('a,b,c', ',', 'd')
Both methods start splitting from the right-hand-side of the string; by giving str.rsplit() a maximum as the second argument, you get to split just the right-hand-most occurrences.
...
Sprintf equivalent in Java
... stream:
PrintStream ps = new PrintStream(baos);
ps.printf("there is a %s from %d %s", "hello", 3, "friends");
System.out.println(baos.toString());
baos.reset(); //need reset to write new string
ps.printf("there is a %s from %d %s", "flip", 5, "haters");
System.out.println(baos.toString());
baos.re...
When to use the JavaScript MIME type application/javascript instead of text/javascript?
... "by context" which is always the correct behavior for all browsers right from the very first browsers
– Pacerier
Jun 1 '13 at 16:08
...
How to use PrimeFaces p:fileUpload? Listener method is never invoked or UploadedFile is null / throw
...loadedFile#getInputStream() instead. See also How to insert uploaded image from p:fileUpload as BLOB in MySQL?
Another potential problem with native API will manifest is when the upload component is present in a form on which a different "regular" ajax request is fired which does not process the up...
How to see which plugins are making Vim slow?
...m instantly gets faster.
With plugins, a "general slowness" usually comes from autocommands; a :autocmd lists them all. Investigate by killing some of them via :autocmd! [group] {event}. Proceed from more frequent events (i.e. CursorMoved[I]) to less frequent ones (e.g. BufWinEnter).
If you can so...