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Merge PDF files

... that works with both versions. #!/usr/bin/env python import sys try: from PyPDF2 import PdfFileReader, PdfFileWriter except ImportError: from pyPdf import PdfFileReader, PdfFileWriter def pdf_cat(input_files, output_stream): input_streams = [] try: # First open all the fil...
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Webfont Smoothing and Antialiasing in Firefox and Opera

...ell, Firefox does not support something like that. In the reference page from Mozilla specifies font-smooth as CSS property controls the application of anti-aliasing when fonts are rendered, but this property has been removed from this specification and is currently not on the standard track. Thi...
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How can I combine hashes in Perl?

...ashes, copy one hash (%hash1) to a new hash (%new_hash), then add the keys from the other hash (%hash2 to the new hash. Checking that the key already exists in %new_hash gives you a chance to decide what to do with the duplicates: my %new_hash = %hash1; # make a copy; leave %hash1 alone foreach my...
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How to get correct timestamp in C#

... What is the other way around? from timestamp to datetime – DanielV Jun 15 '17 at 17:55 2 ...
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Implementing comparison operators via 'tuple' and 'tie', a good idea?

(Note: tuple and tie can be taken from Boost or C++11.) When writing small structs with only two elements, I sometimes tend to choose a std::pair , as all important stuff is already done for that datatype, like operator< for strict-weak-ordering. The downsides though are the pretty much us...
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Having links relative to root?

... to Fruits List</a> Edited in response to question, in comments, from OP: So doing / will make it relative to www.example.com, is there a way to specify what the root is, e.g what if i want the root to be www.example.com/fruits in www.example.com/fruits/apples/apple.html? Yes, prefac...
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Peak-finding algorithm for Python/SciPy

...graphic) prominence? It is "the minimum height necessary to descend to get from the summit to any higher terrain", as it can be seen here: The idea is: The higher the prominence, the more "important" the peak is. Test: I used a (noisy) frequency-varying sinusoid on purpose because it sho...
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Can't create handler inside thread that has not called Looper.prepare()

... You're calling it from a worker thread. You need to call Toast.makeText() (and most other functions dealing with the UI) from within the main thread. You could use a handler, for example. Look up Communicating with the UI Thread in the docume...
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AngularJS - How can I do a redirect with a full page load?

I want to do a redirect that does a full page reload so that the cookies from my web server are refreshed when the page loads. window.location = "/#/Next" and window.location.href = "/#/Next" don't work, they do an Angular route which does not hit the server. ...
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Why are function pointers and data pointers incompatible in C/C++?

...about pointers to functions in the last paragraph. They might be different from other pointers, and the committee is aware of that. share | improve this answer | follow ...