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CSS: center element within a element
... display: flex; /* NEW, Spec - Firefox, Chrome, Opera */
justify-content: center;
align-items: center;
width: 400px;
height: 200px;
background-color: #3498db;
}
.inner-element{
width: 100px;
height: 100px;
background-color: #f1c40f;
}
<div class="flex-container"&g...
Sharing Test code in Maven
...
I recommend using type instead of classifier (see also: classifier). It tells Maven a bit more explicitly what you are doing (and I've found that m2eclipse and q4e both like it better).
<dependency>
<groupId>com.myco.app</groupId>
<artif...
iOS - Dismiss keyboard when touching outside of UITextField
...Where aTextField is the textfield that is responsible for the keyboard)
Swift 3 version looks like that
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(self.dismissKeyboard (_:)))
self.view.addGestureRecognizer(tapGesture)
For dismissKeyboard
@objc func dismissKeyboard (...
Traverse a list in reverse order in Python
...
To avoid the confusion: reversed() doesn't modify the list. reversed() doesn't make a copy of the list (otherwise it would require O(N) additional memory). If you need to modify the list use alist.reverse(); if you need a copy of the list in reversed order use alist[::-1...
Is there a `pointer-events:hoverOnly` or similar in CSS?
...
this is beutifull
– user2860957
Sep 29 '17 at 3:22
2
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Adjust UILabel height depending on the text
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If you are sizing your labels like this, you are doing it wrong. You should use [label sizeToFit].
– Marián Černý
Apr 26 '13 at 6:26
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How can I create a correlation matrix in R?
...what I'm doing. However, I did manage to answer this question for myself.
if d is the matrix (or the original data frame) and the column names are what you want, then the following works:
axis(1, 1:dim(d)[2], colnames(d), las=2)
axis(2, 1:dim(d)[2], colnames(d), las=2)
las=0 would flip the names...
Getting the count of unique values in a column in bash
... with several columns. I want to count the frequency of occurrence of the different values in a column for all the files in a folder and sort them in decreasing order of count (highest count first). How would I accomplish this in a Linux command line environment?
...
How to replace NaN values by Zeroes in a column of a Pandas Dataframe?
...00
EDIT:
To avoid a SettingWithCopyWarning, use the built in column-specific functionality:
df.fillna({1:0}, inplace=True)
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Best way to simulate “group by” from bash?
...ick and dirty method is as follows:
cat ip_addresses | sort -n | uniq -c
If you need to use the values in bash you can assign the whole command to a bash variable and then loop through the results.
PS
If the sort command is omitted, you will not get the correct results as uniq only looks at succ...