Why isn’t guard let foo = foo valid?
Question or problem in the Swift programming language: In Swift, you can use if let optional binding to unwrap an optional into a constant or variable with the same name:
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Author: Abreonia Ng
How to improve People Occlusion in ARKit 3.0
Question or problem in the Swift programming language: We are working on a demo app using people’s occlusion in ARKit. Because we want to add videos in the final scene, we use SCNPlanes to render the video using a SCNBillboardConstraint to ensure they are facing the right way. These videos are also partially transparent, using […]
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‘YearCalendarUnit’ was deprecated in OS X version 10.10: Use NSCalendarUnitYear instead
Question or problem in the Swift programming language: My code:
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Access-Control-Allow-Origin in Django app when accessed with Phonegap
Question or problem about Python programming: I’m developing a Phonegap app for my Django based app, but when trying to make Ajax calls I get this error:
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How to change a widget’s font style without knowing the widget’s font family/size?
Question or problem about Python programming: Is there a way to change a Tkinter widget’s font style without knowing the widget’s font family and font size?
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Differences between CBUUID and NSUUID in swift
Question or problem in the Swift programming language: Where are the differences between the CBUUID and the NSUUID object?
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How to change Send button image in JSQMessagesController
Question or problem in the Swift programming language: How can I change JSQMessagesController “Send” button from just String to UIImageView?
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Multithreaded web server in python
Question or problem about Python programming: I’m trying to create multithreaded web server in python, but it only responds to one request at a time and I can’t figure out why. Can you help me, please?
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pip install gives error: Unable to find vcvarsall.bat
Question or problem about Python programming: Using pip install zipline on Windows 8 with Python 2.7 gives me the error:
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How to open and convert sqlite database to pandas dataframe
Question or problem about Python programming: I have downloaded some datas as a sqlite database (data.db) and I want to open this database in python and then convert it into pandas dataframe.
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