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Selectors in Objective-C?

...s the name of a method, and you can assign it to a class of type 'SEL' and then run methods such as respondToSelector to see if the receiver implements that method. Can someone offer up a better explanation? ...
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Get class list for element with jQuery

...ById('divId').className.split(/\s+/); to get you an array of class names. Then you can iterate and find the one you want. var classList = document.getElementById('divId').className.split(/\s+/); for (var i = 0; i < classList.length; i++) { if (classList[i] === 'someClass') { //do so...
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How do I encode/decode HTML entities in Ruby?

...If you are decoding HTML entities for storage as plain text in a database, then expect your database to do a lot of complaining about bad characters. Encoded entities are encoded to allow them to transfer as plain text. Decoding them can, and most likely will, revert them to upper-bit-set characters...
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Haversine Formula in Python (Bearing and Distance between two GPS points)

... You can, but if you say import math then you have to specify math.pi, math.sin etc. With from math import * you get direct access to all the module contents. Check out "namespaces" in a python tutorial (such as docs.python.org/tutorial/modules.html) ...
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WordPress is giving me 404 page not found for all pages except the homepage

...ite.com/wp-admin/options-permalink.php Choose Default permalink setting, then save changes Then you can return it again to your other previous permalink choice or keep it as default as yo wish Note that this problem can happen when you move your site from a domain or location to another one. ...
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Override body style for content in an iframe

...ary CSS if the file in the iframe is from the same domain as your parent, then you can access the DOM of the document in the iframe from the parent. share | improve this answer | ...
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UIButton custom font vertical alignment

...nt you will have to download Apple Font Tool Suite command line utilities. Then take your font and do the following: ~$ ftxdumperfuser -t hhea -A d Bold.ttf This will create Bold.hhea.xml. Open it with a text editor and increase the value of ascender attribute. You will have to experiment a littl...
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How to delete a localStorage item when the browser window/tab is closed?

... Why not use sessionStorage then? – Sachin Prasad Dec 27 '17 at 10:08  |  show 1 more comment ...
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py2exe - generate single executable file

... Sure if you want only the interpreter not bundled then choose 2 for the bundle_files option. Good luck! – minty Aug 10 '09 at 17:36 13 ...
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Purpose of #!/usr/bin/python3

...o be treated as a comment. If the path to the Python executable is wrong, then naturally the script will fail. It is easy to create links to the actual executable from whatever location is specified by standard convention. ...