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How to write iOS app purely in C
...we are hard-coding the screen's bounds,
// because returning a struct from a `objc_msgSend()` (via
// [[UIScreen mainScreen] bounds]) requires a different function call
// and is finicky at best.
id view = objc_msgSend(objc_msgSend(objc_getClass("View"), sel_getUid("alloc")), sel_g...
Uploading base64 encoded Image to Amazon S3 via Node.js
... I used with native aws-sdk.
var AWS = require('aws-sdk');
AWS.config.loadFromPath('./s3_config.json');
var s3Bucket = new AWS.S3( { params: {Bucket: 'myBucket'} } );
inside your router method :-
ContentType should be set to the content type of the image file
buf = Buffer.from(req.body.imageBi...
Accessing bash command line args $@ vs $*
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A nice handy overview table from the Bash Hackers Wiki:
where c in the third row is the first character of $IFS, the Internal Field Separator, a shell variable.
If the arguments are to be stored in a script variable and the arguments are expected to...
Generating random integer from a range
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Thanks, this seems to be good enough for me from quick tests - its distribution for the -1, 0, 1 is nearly 33:33:33.
– Matěj Zábský
Feb 15 '11 at 20:23
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How can I increment a char?
I'm new to Python, coming from Java and C. How can I increment a char? In Java or C, chars and ints are practically interchangeable, and in certain loops, it's very useful to me to be able to do increment chars, and index arrays by chars.
...
Understanding dispatch_async
...to run tasks in the background.
For instance, if I am downloading a file from the internet and I want to update the user on the progress of the download, I will run the download in the priority default queue and update the UI in the main queue asynchronously.
dispatch_async(dispatch_get_global_qu...
RegEx to parse or validate Base64 data
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From the RFC 4648:
Base encoding of data is used in many situations to store or transfer data in environments that, perhaps for legacy reasons, are restricted to US-ASCII data.
So it depends on the purpose of usage of t...
What's the difference between Cache-Control: max-age=0 and no-cache?
...ieve max-age=0 simply tells caches (and user agents) the response is stale from the get-go and so they SHOULD revalidate the response (eg. with the If-Not-Modified header) before using a cached copy, whereas, no-cache tells them they MUST revalidate before using a cached copy. From 14.9.1 What is C...
File Upload using AngularJS
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FileReader is a class from standard HTML5 File API w3.org/TR/FileAPI. It allows you to read data from file specified in html input element and process it inside onloadend callback function. You don't need any library to use this API, its already i...
What is the difference between Normalize.css and Reset CSS?
...are actually made more robust) whereas they are visually indistinguishable from normal text after including reset.css. So, normalize.css does not impose a visual starting point (homogeny) upon you. This may not be to everyone's taste. The best thing to do is experiment with both and see which gels w...