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How can I read and parse CSV files in C++?
...class CSVRow
{
public:
std::string_view operator[](std::size_t index) const
{
return std::string_view(&m_line[m_data[index] + 1], m_data[index + 1] - (m_data[index] + 1));
}
std::size_t size() const
{
return m_data.size() - 1;
...
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...":{"list":{"get_var": "oldBoard"},"index":{"get_var": "r"}}},"do":[
{"local_var": "newRow","value":{"list":[]},"do&...
Cell spacing in UICollectionView
...ionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath {
return [self getCellSize:indexPath]; // will be w120xh100 or w190x100
// if the width is higher, only one image will be shown in a line
}
#pragma mark collection view cell paddin...
How to change plot background color?
...es later
fig = plt.figure()
ax = fig.add_subplot(1, 1, 1) # nrows, ncols, index
You used the stateful API (if you're doing anything more than a few lines, and especially if you have multiple plots, the object-oriented methods above make life easier because you can refer to specific figures, plot o...
jQuery SVG, why can't I addClass?
...elieve is the best approach:
// addClass
$('path').attr('class', function(index, classNames) {
return classNames + ' class-name';
});
// removeClass
$('path').attr('class', function(index, classNames) {
return classNames.replace('class-name', '');
});
...
What is the correct syntax for 'else if'?
...hon.org/3.1 the important links are Tutorial: docs.python.org/3.1/tutorial/index.html Language reference: docs.python.org/3.1/reference/index.html Library refernce: docs.python.org/3.1/library/index.html
– Lyndon White
Mar 7 '10 at 10:37
...
Is the SQL WHERE clause short-circuit evaluated?
...hrough its optimization algorithm that takes into account a lot of things (indexes, statistics, table size, resources, etc) to come up with an effective execution plan. After this evaluation, you can't say for sure that your short circuit logic is guaranteed.
I ran into the same question myself so...
CSS3 Rotate Animation
...ght:114px;
top:400px;
margin:0 auto;
margin-left:-195px;
z-index:0;
-webkit-transition-duration: 0.8s;
-moz-transition-duration: 0.8s;
-o-transition-duration: 0.8s;
transition-duration: 0.8s;
-webkit-transition-property: -webkit-transform;
-moz-transition-pr...
How to Git stash pop specific stash in 1.8.3?
...ommit 9fa1f90, 31 Oct 2016)
stash: allow stashes to be referenced by index only
Instead of referencing "stash@{n}" explicitly, make it possible to
simply reference as "n".
Most users only reference stashes by their position in the stash stack (what I refer to as the "index" here).
...
Pandas aggregate count distinct
... @guy Try df.groupby('date').agg({'user_id': lambda s: s.unique().reset_index(drop=True)})
– BallpointBen
Aug 14 '18 at 19:01
...