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How many random elements before MD5 produces collisions?
... quintillion 374 quadrillion 607 trillion 431 billion 768 million 211 thousand 456.
However if you keep all the hashes then the probability is a bit higher thanks to birthday paradox. To have a 50% chance of any hash colliding with any other hash you need 264 hashes. This means that to get a collis...
Accessing the web page's HTTP Headers in JavaScript
...o read the current headers. You could make another request to the same URL and read its headers, but there is no guarantee that the headers are exactly equal to the current.
Use the following JavaScript code to get all the HTTP headers by performing a get request:
var req = new XMLHttpRequest();...
How do you git show untracked files that do not exist in .gitignore
I'm using git status -u to show untracked files. And on the terminal, I see plenty untracked files that I need to be untracked such as unit tests, personal documentation, etc. I have put them in .gitignore , but it seems that git status still shows them.
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Temporarily disable Eclipse plugin
...havior. These will be listed in the preferences, under General → Startup and Shutdown. If the plugin provides view, you will need to close those views (in all perspectives) for this to work.
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What are the performance characteristics of sqlite with very large database files? [closed]
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So I did some tests with sqlite for very large files, and came to some conclusions (at least for my specific application).
The tests involve a single sqlite file with either a single table, or multiple tables. Each table had about 8 columns, almost all integers, and 4 indices.
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What is “export default” in javascript?
...ello!
Update: As of June 2015, the module system is defined in §15.2 and the export syntax in particular is defined in §15.2.3 of the ECMAScript 2015 specification.
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std::cin input with spaces?
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And why not use cin.getline(input, sizeof(input));? Also, shouldn't you check the return status?
– Jonathan Leffler
Jun 14 '13 at 23:32
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Custom domain for GitHub project pages
...or http:// if you choose NOT to use HTTPS). I always use www as my final landing. Why(1,2), is for another discussion.
This answer is long but it is not complicated. I was verbose for clarity as the GitHub docs on this topic are not clear or linear.
Step 1: Enable GitHub pages in GitHub settings
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Too many 'if' statements?
... it's ugly, excessive or a number of other things. I've looked at formulas and attempted to write a few solutions, but I end up with a similar amount of statements.
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Editing legend (text) labels in ggplot
I have spent hours looking in the documentation and on StackOverflow, but no solution seems to solve my problem. When using ggplot I can't get the right text in the legend, even though it's in my dataframe. I have tried scale_colour_manual , scale_fill_manual with different values for labels=...