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Difference between e.target and e.currentTarget
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Ben is completely correct in his answer - so keep what he says in mind. What I'm about to tell you isn't a full explanation, but it's a very easy way to remember how e.target, e.currentTarget work in relation to mouse events and the display list:
e.target = The thing u...
Naming threads and thread-pools of ExecutorService
Let's say I have an application that utilizes the Executor framework as such
17 Answers
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Extract date (yyyy/mm/dd) from a timestamp in PostgreSQL
...he difference between them is that the latter returns the same data type like timestamptz keeping your time zone intact (if you need it).
=> select date_trunc('day', now());
date_trunc
------------------------
2015-12-15 00:00:00+02
(1 row)
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How do HttpOnly cookies work with AJAX requests?
JavaScript needs access to cookies if AJAX is used on a site with access restrictions based on cookies. Will HttpOnly cookies work on an AJAX site?
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Press alt + numeric in bash and you get (arg [numeric]) what is that?
... which normally acts in a forward direction, that command will act in a backward direction. For example, to kill text back to the start of the line, you might type 'M-- C-k'.
The general way to pass numeric arguments to a command is to type meta digits before the command. If the first 'digit' typed ...
How can I SELECT rows with MAX(Column value), DISTINCT by another column in SQL?
...you need to do is select BOTH the home and its max date time, then join back to the topten table on BOTH fields:
SELECT tt.*
FROM topten tt
INNER JOIN
(SELECT home, MAX(datetime) AS MaxDateTime
FROM topten
GROUP BY home) groupedtt
ON tt.home = groupedtt.home
AND tt.datetime = groupedt...
I need an unordered list without any bullets
...if you want to remove indentation as well.
See Listutorial for a great walkthrough of list formatting techniques.
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What is the difference between ArrayList.clear() and ArrayList.removeAll()?
...r clear():
public void clear() {
modCount++;
// Let gc do its work
for (int i = 0; i < size; i++)
elementData[i] = null;
size = 0;
}
The source code for removeAll()(As defined in AbstractCollection):
public boolean removeAll(Collection<?> c) {
boolean modif...
How to escape indicator characters (i.e. : or - ) in YAML
In a config file, I have a key to which I wish to assign a URL. The problem is that YAML interprets : and - characters as either creating mappings or lists, so it has a problem with the line
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How to disable python warnings
I am working with code that throws a lot of (for me at the moment) useless warnings using the warnings library. Reading (/scanning) the documentation I only found a way to disable warnings for single functions . But I don't want to change so much of the code.
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