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Base64 Java encode and decode a string [duplicate]
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246
You can use following approach:
import org.apache.commons.codec.binary.Base64;
// Encode dat...
When should I mock?
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124
A unit test should test a single codepath through a single method. When the execution of a met...
Python memory usage of numpy arrays
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246
You can use array.nbytes for numpy arrays, for example:
>>> import numpy as np
>&...
chart.js load totally new data
...ySelector('#results-graph'); // why use jQuery?
ctx = canvas.getContext('2d');
ctx.canvas.width = $('#graph').width(); // resize to parent width
ctx.canvas.height = $('#graph').height(); // resize to parent height
var x = canvas.width/2;
var y = canvas.height/2;
ctx.font = '10pt Verdana...
How to parse freeform street/postal address out of text, and into components
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294
I saw this question a lot when I worked for an address verification company. I'm posting the a...
How does a hash table work?
...e come.
Say that the output of the hash algorithm is in the range of 0 to 20 and you get the value 17 from a particular title. If the size of the library is only 7 books, you count 1, 2, 3, 4, 5, 6, and when you get to 7, you start back at 0. Since we need to count 17 times, we have 1, 2, 3, 4, 5, ...
Persistent invalid graphics state error when using ggplot2
...n't get reset. This worked for me and it's simpler than reinstalling ggplot2.
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Reading a binary file with python
...using struct.unpack:
The start bytes: struct.unpack("iiiii", fileContent[:20])
The body: ignore the heading bytes and the trailing byte (= 24); The remaining part forms the body, to know the number of bytes in the body do an integer division by 4; The obtained quotient is multiplied by the string ...
How to run a JAR file
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210
You need to specify a Main-Class in the jar file manifest.
Oracle's tutorial contains a compl...
AngularJS : Differences among = & @ in directive scope? [duplicate]
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