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Fast way to discover the row count of a table in PostgreSQL
... than the limit anyway (like with ORDER BY something while it can't use an index, or with aggregate functions). Apart from that, only the limited number of rows from the subquery is processed.
– Erwin Brandstetter
Jun 17 '17 at 17:37
...
Why should I use the keyword “final” on a method parameter in Java?
...rom, final int to)
{
return new Iterator<Integer>(){
int index = from;
public Integer next()
{
return index++;
}
public boolean hasNext()
{
return index <= to;
}
// remove method omitted
};
}
H...
What's the best three-way merge tool? [closed]
...ry smart algorithm for solving conflicts, regular expressions for automatically solving conflicts, integrate with ClearCase, SVN, Git, MS Visual Studio, editable merged file, compare directories
Its keyboard-navigation is great: ctrl-arrows to navigate the diffs, ctrl-1, 2, 3 to do the merging.
Al...
Use dynamic (variable) string as regex pattern in JavaScript
...g as regex:
Not every string is a valid regex, though: there are some speciall characters, like ( or [. To work around this issue, simply escape the string before turning it into a regex. A utility function for that goes in the sample below:
function escapeRegExp(stringToGoIntoTheRegex) {
return...
Possible to make labels appear when hovering over a point in matplotlib?
... Very nice! One note, I noticed that ind["ind"] is actually a list of indexes for all points under the curser. This means that the above code actually gives you access to all points at a given position, and not just the top most point. For instance, if you have two overlapping points the text c...
How to print time in format: 2009‐08‐10 18:17:54.811
...
Superb answer. I could do all sorts of things in PHP, but knew it was all there already in C. THanks.
– Vijay Kumar Kanta
Jan 23 '14 at 12:43
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Table with fixed header and fixed column on pure css
...first column stick to the left, use:
thead th:first-child {
left: 0;
z-index: 1;
}
/* Use overflow:scroll on your container to enable scrolling: */
div {
max-width: 400px;
max-height: 150px;
overflow: scroll;
}
/* Use position: sticky to have it stick to the edge
* and top, right,...
Calling remove in foreach loop in Java [duplicate]
...ist will avoid ConcurrentModificationException, there could still be other indexing problems/Exceptions (more details).
– cellepo
Dec 20 '18 at 1:23
add a comment
...
Resize image proportionally with CSS? [duplicate]
Is there a way to resize (scale down) images proportionally using ONLY CSS?
18 Answers
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How to use Git Revert
...changes necessary to revert the named commits to your working tree and the index, but does not make the commits. In addition, when this option is used, your index does not have to match the HEAD commit. The revert is done against the beginning state of your index.
This is useful when reverting ...