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extract part of a string using bash/cut/split
...om the end
So # means match from the beginning (think of a comment line) and % means from the end. One instance means shortest and two instances means longest.
You can get substrings based on position using numbers:
${MYVAR:3} # Remove the first three chars (leaving 4..end)
${MYVAR::3} # Retu...
Saving a Numpy array as an image
...yPNG. It's a pure Python (no dependencies) open source PNG encoder/decoder and it supports writing NumPy arrays as images.
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Exclude a directory from git diff
...I'm creating a diff for our entire software release using the git diff command. However the changes to the specs are irrelevant for this procedure, and just create headaches. now I know i can do
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Simple way to find if two different lists contain exactly the same elements?
...plest way to find if two Lists contain exactly the same elements, in the standard Java libraries?
16 Answers
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Semi-transparent color layer over background-image?
I have a DIV and I would like to put a pattern as background. This pattern is gray. So to make it a little more nice, I would like to put a light transparent color "layer" over. Below is what I tried but which did not work. Is there a way to put the colored layer over the background image?
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Can iterators be reset in Python?
Can I reset an iterator / generator in Python? I am using DictReader and would like to reset it to the beginning of the file.
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Is it possible to make an HTML anchor tag not clickable/linkable using CSS?
...his css:
.inactiveLink {
pointer-events: none;
cursor: default;
}
And then assign the class to your html code:
<a style="" href="page.html" class="inactiveLink">page link</a>
It makes the link not clickeable and the cursor style an arrow, not a hand as the links have.
or use...
C# Double - ToString() formatting with two decimal places but no rounding
...te(myDoubleValue * 100) / 100;
For instance:
If the number is 50.947563 and you use the following, the following will happen:
- Math.Truncate(50.947563 * 100) / 100;
- Math.Truncate(5094.7563) / 100;
- 5094 / 100
- 50.94
And there's your answer truncated, now to format the string simply do the...
Storing Python dictionaries
I'm used to bringing data in and out of Python using CSV files, but there are obvious challenges to this. Are there simple ways to store a dictionary (or sets of dictionaries) in a JSON or pickle file?
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How exactly to use Notification.Builder
...en added to the Support Package so we can use this to support API level v4 and up:
http://developer.android.com/reference/android/support/v4/app/NotificationCompat.Builder.html
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