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Conditionally Remove Dataframe Rows with R [duplicate]
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Logic index:
d<-d[!(d$A=="B" & d$E==0),]
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Inserting a string into a list without getting split into characters
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['hello', 'world', 'python']
or (use insert function where you can use index position in list)
ls.insert(0,'python')
print(ls)
['python', 'hello', 'world']
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Get the value of a dropdown in jQuery
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What if I need the index or id rather than the text?
– bgmCoder
Nov 14 '15 at 20:49
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How do I interpolate strings?
...0}overflow", strVar);
And you could also use named parameters instead of indexes.
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Move (or “Undo”) last git commit to unstaged area [duplicate]
..., i.e. HEAD^
git reset HEAD^
Adding --soft will keep those files in the index: (ready to be committed)
git reset --soft HEAD^
--soft
(…) This leaves all your changed files "Changes to be committed", as git status would put it.
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python .replace() regex [duplicate]
...l for what you want. I might try something like
z.write(article[:article.index("</html>") + 7]
This is much cleaner, and should be much faster than a regex based solution.
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Tooltip on image
...adding: 5px 0;
/* Position the tooltip */
position: absolute;
z-index: 1;
}
.tooltip:hover .tooltiptext {
visibility: visible;
}
.size_of_img{
width:90px}
</style>
<body style="text-align:center;">
<p>Move the mouse over the text below:</p>
<...
Python way of printing: with 'format' or percent form? [duplicate]
...'s one example stackoverflow.com/a/3228928/174728. It also lets you do key/index lookups import sys;"{[version]}".format(vars(sys))
– John La Rooy
Dec 7 '14 at 22:24
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Interpret XMP-Metadata in ALAssetRepresentation
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ALAssetRepresentation* representation = [[self assetAtIndex:index] defaultRepresentation];
// Create a buffer to hold the data for the asset's image
uint8_t *buffer = (Byte*)malloc(representation.size); // Copy the data from the asset into the buffer
NSUInteger length = [repres...
Java string split with “.” (dot) [duplicate]
Why does the second line of this code throw ArrayIndexOutOfBoundsException ?
4 Answers
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