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JavaScript: replace last occurrence of text in a string
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You can use String#lastIndexOf to find the last occurrence of the word, and then String#substring and concatenation to build the replacement string.
n = str.lastIndexOf(list[i]);
if (n >= 0 && n + list[i].length >= str.length) {
...
What is the purpose of setting a key in data.table?
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A key is basically an index into a dataset, which allows for very fast and efficient sort, filter, and join operations. These are probably the best reasons to use data tables instead of data frames (the syntax for using data tables is also much mo...
Meaning of Open hashing and Closed hashing
...e rest helps).
For instance, the "open" in "open addressing" tells us the index (aka. address) at which an object will be stored in the hash table is not completely determined by its hash code. Instead, the index may vary depending on what's already in the hash table.
The "closed" in "closed ha...
Postgresql query between date ranges
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This structure also has the advantage of being able to maintain use of indexes.
Many people may suggest a form such as the following, but they do not use indexes:
WHERE
DATEPART('year', login_date) = 2014
AND DATEPART('month', login_date) = 2
This involves calculating the conditio...
Emacs bulk indent for Python
... C-c C-r must be custom bindings you've set up yourself. If you run emacs -q (to run emacs without loading an init file) you'll see there is no binding for C-c C-l or C-c C-r in Python mode.
– unutbu
Dec 10 '15 at 13:19
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Is there a way to reduce the size of the git folder?
... edited Oct 29 '15 at 1:44
Aequitas
1,7851717 silver badges4040 bronze badges
answered Jun 25 '10 at 16:58
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Limiting number of displayed results when using ngRepeat
...meone else finds it useful.
<div ng-repeat="video in videos" ng-if="$index < 3">
...
</div>
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How to install packages offline?
... Instead of --allow-hosts=None you could use the switch --no-index
– romor
May 27 '15 at 15:46
Can you p...
Compare two Byte Arrays? (Java)
... firstLength != secondLength ) {
return false;
}
for( int index = 0; index < firstLength; ++index ) {
if( first[firstOffset+index] != second[secondOffset+index]) {
return false;
}
}
return true;
}
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Test whether a glob has any matches in bash
...onciseness and minimizing potential side effects.
UPDATE: Example usage requested.
if compgen -G "/tmp/someFiles*" > /dev/null; then
echo "Some files exist."
fi
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