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Base64 Java encode and decode a string [duplicate]

... 246 You can use following approach: import org.apache.commons.codec.binary.Base64; // Encode dat...
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How do I append one string to another in Python?

... 626 If you only have one reference to a string and you concatenate another string to the end, CPyth...
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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...
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Position icons into circle

... 2020 solution Here's a more modern solution I use these days. I start off by generating the HTML starting from an array of images. Whether the HTML is generated using PHP, JS, some HTML preprocessor, whatever... this matters ...
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How can I extract a predetermined range of lines from a text file on Unix?

I have a ~23000 line SQL dump containing several databases worth of data. I need to extract a certain section of this file (i.e. the data for a single database) and place it in a new file. I know both the start and end line numbers of the data that I want. ...
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__lt__ instead of __cmp__

Python 2.x has two ways to overload comparison operators, __cmp__ or the "rich comparison operators" such as __lt__ . The rich comparison overloads are said to be preferred, but why is this so? ...
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browser sessionStorage. share between tabs?

...upport as well. :) Credit goes to this full article: http://blog.guya.net/2015/06/12/sharing-sessionstorage-between-tabs-for-secure-multi-tab-authentication/ share | improve this answer | ...
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How to Turn Off Showing Whitespace Characters in Visual Studio IDE

... | edited Sep 27 '17 at 22:34 Mwiza 3,67822 gold badges2727 silver badges2626 bronze badges ...
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Check if a string matches a regex in Bash script

...amp; echo "yes" Or more a accurate test: [[ $date =~ ^[0-9]{4}(0[1-9]|1[0-2])(0[1-9]|[1-2][0-9]|3[0-1])$ ]] && echo "yes" # |^^^^^^^^ ^^^^^^ ^^^^^^ ^^^^^^ ^^^^^^^^^^ ^^^^^^ | # | | ^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ | # | | | ...
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What is difference between functional and imperative programming languages?

... to add a series of numbers: int total = 0; int number1 = 5; int number2 = 10; int number3 = 15; total = number1 + number2 + number3; Each statement changes the state of the program, from assigning values to each variable to the final addition of those values. Using a sequence of five state...