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Android image caching
...the punchline: use the system cache.
URL url = new URL(strUrl);
URLConnection connection = url.openConnection();
connection.setUseCaches(true);
Object response = connection.getContent();
if (response instanceof Bitmap) {
Bitmap bitmap = (Bitmap)response;
}
Provides both memory and flash-rom ca...
What Automatic Resource Management alternatives exist for Scala?
...ty much like one another. I did see a pretty cool example using continuations, though.
9 Answers
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Java - sending HTTP parameters via POST method easily
...a body of the request, after the headers.
To do a POST with HttpURLConnection, you need to write the parameters to the connection after you have opened the connection.
This code should get you started:
String urlParameters = "param1=a&param2=b&param3=c";
byte[] postData = urlParame...
How can I make Bootstrap columns all the same height?
...
Solution 4 using Bootstrap 4
Bootstrap 4 uses Flexbox so there is no need for extra CSS.
Demo
<div class="container">
<div class="row ">
<div class="col-md-4" style="background-color: red">
...
Tool to convert Python code to be PEP8 compliant
...e yourself a cup of coffee this tool happily removes all those pesky PEP8 violations which don't change the meaning of the code.
Install it via pip:
pip install autopep8
Apply this to a specific file:
autopep8 py_file --in-place
or to your project (recursively), the verbose option gives you some f...
App Inventor 2 低功耗蓝牙 BlueToothLE 拓展 · App Inventor 2 中文网
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低功耗蓝牙，也称为蓝牙LE 或简称 BLE，是一种类似于经典蓝牙的新通信协议，不同之处在于它旨在消耗更少的功耗和成本，同时保持同...
Cartesian product of multiple arrays in JavaScript
... flatMap to the language!
Example
This is the exact example from your question:
let output = cartesian([1,2],[10,20],[100,200,300]);
Output
This is the output of that command:
[ [ 1, 10, 100 ],
[ 1, 10, 200 ],
[ 1, 10, 300 ],
[ 1, 20, 100 ],
[ 1, 20, 200 ],
[ 1, 20, 300 ],
[ 2, 10, 100 ...
How to open a file using the open with statement
... don't gain anything by putting an explicit return at the end of your function. You can use return to exit early, but you had it at the end, and the function will exit without it. (Of course with functions that return a value, you use the return to specify the value to return.)
Using multiple ope...
How to Rotate a UIImage 90 degrees?
I have a UIImage that is UIImageOrientationUp (portrait) that I would like to rotate counter-clockwise by 90 degrees (to landscape). I don't want to use a CGAffineTransform . I want the pixels of the UIImage to actually shift position. I am using a block of code (shown below) originally inten...
How to see query history in SQL Server Management Studio
...y stored in some log files? If yes, can you tell me how to find their location? If not, can you give me any advice on how to see it?
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