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Filter dataframe rows if value in column is in a set list of values [duplicate]
... string
... '600141' ...
... '600329' ...
... ... ...
Suppose now we have a list of strings which we want the values in 'STK_ID' to end with, e.g.
endstrings = ['01$', '02$', '05$']
We can join these strings with the regex 'or' character | and pass the string to str.contains to filte...
libpng warning: iCCP: known incorrect sRGB profile
...CCP chunk from the PNG image.
Some applications treat warnings as errors; if you are using such an application you do have to remove the chunk. You can do that with any of a variety of PNG editors such as ImageMagick's
convert in.png out.png
To remove the invalid iCCP chunk from all of the PNG ...
What is a good Hash Function?
...is the best I've ever used.
http://www.azillionmonkeys.com/qed/hash.html
If you care about cryptographically secure or anything else more advanced, then YMMV. If you just want a kick ass general purpose hash function for a hash table lookup, then this is what you're looking for.
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What's the difference between URI.escape and CGI.escape?
...es how data should be encoded/decode between web server and application.
Now, let's say that you need to escape a URI in your app. It is a more specific use case.
For that, the Ruby community used URI.escape for years. The problem with URI.escape was that it could not handle the RFC-3896 spec.
UR...
How Big can a Python List Get?
...answered May 12 '09 at 23:48
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Converting pixels to dp
...tan is saying: this is dangerous and you shouldn't be using it, especially now when device form factors are becoming so complex.
– Saket
Aug 5 '19 at 17:50
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How to structure a express.js application?
...dule.exports = mongoose.model('PhoneNumber', PhoneNumberSchema);
and then if I need to create a phone number, it's as simple as:
var PhoneNumber = require('../models/phoneNumber');
var phoneNumber = new PhoneNumber();
if I need to use the schema, then PhoneNumber.schema
(which assumes that we are ...
Access-control-allow-origin with multiple domains
In my web.config I would like to specify more than one domain for the access-control-allow-origin directive. I don't want to use * . I've tried this syntax:
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What generates the “text file busy” message in Unix?
...eck what other processes are using it. You can use kill command to kill it if needed.
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Download file of any type in Asp.Net MVC using FileResult?
...010. This just shows the correct MIME type to use when the MIME type is unknown. ReadAllBytes was added years later in an edit. Why is this my second most upvoted answer? Oh well.
– Ian Henry
May 6 '15 at 21:51
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