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What are the most interesting equivalences arising from the Curry-Howard Isomorphism?
...pon the Curry-Howard Isomorphism relatively late in my programming life, and perhaps this contributes to my being utterly fascinated by it. It implies that for every programming concept there exists a precise analogue in formal logic, and vice versa. Here's a "basic" list of such analogies, off th...
Hide html horizontal but not vertical scrollbar
...of fixed width, but variable height. I would like to set overflow:scroll and be able to show a vertical scrollbar, but not a horizontal one. I am not able to use overflow:auto due to other things specific to my situation.
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Can I embed a custom font in an iPhone application?
...uld like to have an app include a custom font for rendering text, load it, and then use it with standard UIKit elements like UILabel . Is this possible?
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How to check iOS version?
...lable(iOS 9, *) {}
In Objective-C, you need to check the system version and perform a comparison.
[[NSProcessInfo processInfo] operatingSystemVersion] in iOS 8 and above.
As of Xcode 9:
if (@available(iOS 9, *)) {}
The full answer …
In Objective-C, and Swift in rare cases, it's better to...
Check if an image is loaded (no errors) with jQuery
...ng, when an error occurs it does something else. I'm using jQuery load() and error() methods as events. After these events I check the image DOM element for the .complete to make sure the image wasn't already loaded before jQuery could register the events.
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Java: Clear the console
...ws, here is a clarification:
Runtime.getRuntime().exec("cls");
This command does not work, for two reasons:
There is no executable named cls.exe or cls.com in a standard Windows installation that could be invoked via Runtime.exec, as the well-known command cls is builtin to Windows’ command l...
LLVM vs clang on OS X
I have a question concerning llvm, clang, and gcc on OS X.
3 Answers
3
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How to save an image locally using Python whose URL address I already know?
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with urlretrieve I just get a 1KB file with a dict and 404 error text inside.Why? If I enter url into my browser I can get the picture
– Yebach
Oct 29 '14 at 12:20
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Xcode debugging - displaying images
I love using the Xcode debugger. You can take a look at a variable's value and even change it.
6 Answers
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Pointers in C: when to use the ampersand and the asterisk?
I'm just starting out with pointers, and I'm slightly confused. I know & means the address of a variable and that * can be used in front of a pointer variable to get the value of the object that is pointed to by the pointer. But things work differently when you're working with arrays, string...