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Reading an image file into bitmap from sdcard, why am I getting a NullPointerException?
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The MediaStore API is probably throwing away the alpha channel (i.e. decoding to RGB565). If you have a file path, just use BitmapFactory directly, but tell it to use a format that preserves alpha:
BitmapFactory.Options options = new Bitma...
Python JSON serialize a Decimal object
... are using both marshmallow and graphene. When a query is called on a rest api, marshmallow works expectedly for decimal fields. However when it is called with graphql it raised an is not JSON serializable error.
– Roel
Apr 2 '19 at 9:45
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Base64 Decoding in iOS 7+
I have Encoded text( NSString ) using NSData Class new API which is Added in iOS7.
2 Answers
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Adding :default => true to boolean in existing Rails column
...f down
change_column_default :profiles, :show_attribute, nil
end
Rails API-docs
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How to check if a string contains only digits in Java [duplicate]
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@user2065083 Its always recommended to user standard API to solve your problem. Anyone giving it a single read can understand (and maintain) your code. So its beneficial from long term point of view.
– Apurv
Feb 27 '13 at 12:28
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How to change the opacity (alpha, transparency) of an element in a canvas element after it has been
...ue of something that has been drawn already. Maybe this wasn't part of the api when this question was asked.
given 2d context c.
function reduceAlpha(x, y, w, h, dA) {
var screenData = c.getImageData(x, y, w, h);
for(let i = 3; i < screenData.data.length; i+=4){
screenData.data[i] -...
Why can't Python parse this JSON data?
...onaries of lists.
You can find ujson in the Python package index and the API is almost identical to Python's built-in json library.
ujson is also much faster if you're loading larger JSON files. You can see the performance details in comparison to other Python JSON libraries in the same link pro...
Generate a UUID on iOS from Swift
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You could also just use the NSUUID API:
let uuid = NSUUID()
If you want to get the string value back out, you can use uuid.UUIDString.
Note that NSUUID is available from iOS 6 and up.
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OwinStartup not firing
...ivity killer I had this problem and couldn't figure out for a week why web api stopped working. Another proof resharper is killing my productivity.
– Ivan G.
Dec 8 '15 at 16:47
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Get keys from HashMap in Java
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Check this.
https://docs.oracle.com/javase/8/docs/api/java/util/HashMap.html
(Use java.util.Objects.equals because HashMap can contain null)
Using JDK8+
/**
* Find any key matching a value.
*
* @param value The value to be matched. Can be null.
* @return Any key matc...