Learning to be good at thinking, thinking, thinking.

MD-family The MD family of hashing algorithms were designed by Ron Rivest during the late 1980’s and early 1990’s. MD actually stands for “Message Digest”. MD2 It was optimized to run on 8-bit computers and generates a 128-bit hash value the hashes are generally displayed as hexadecimal string which is 32 characters long. This hash exhibits f... Read More

Generating RSA key pair OpenSSL can generate several kinds of public/private keypairs. RSA is the most common kind of keypair generation. Generating an RSA private key You can generate a 2048-bit RSA private key with the following commands: openssl genpkey -algorithm RSA -out rsa_private.pem \ -pkeyopt rsa_keygen_bits:2048 or openssl ge... Read More

Abstract and concrete are opposite concepts, many times we just know what they mean, but don’t really understand them. So today let us get to know them again and have a clearer and deeper understanding of them. Abstract An abstract is a brief summary of one or more things, there are two important points here: From one or more things Find... Read More

Here are some phrase patterns for daily usage: A mixed blessing A stepping stone An eye-opening experience As opposed to sth. At first glance, I’d say… However, at the end of the day, I’d say… Bear out Both you and I are students. By and large Can you tell me the definition of sth. Cut both ways Either you or he is wrong.... Read More

Table Here’s a table of the vowels in English. Symbol Word Transcription More Examples [i:] fee [fi:] she, cream, believe, receive, heed, meet [ɪ] fit [fɪt] hit, income, definition, been (for some) [u:] boot [b... Read More

Table Here’s a table of the consonants in English. Manner Voicing Symbol Word Transcription More Examples Plosives/Stops Voiceless [p] pat [pæt] put, post, apart, spar     [t] tie [taɪ] type, stem, nast... Read More

& ampersand, epershand or and @ at % percent / slash, forward slash, oblique, solidus, stroke or division \ backslash . period(US), full stop(UK) or dot * asterisk, multiplication or star ~ tilde _ underscore + plus - minus, hyphen or dash = equal... Read More

Internet users have developed many slang terms over the years. Here is a collection in my daily learning: Shorthands AAMOF - As a matter of fact ABT - About ADN - Any day now AFK - Away from keyboard AMA - Ask me anything ADIH - Another day in hell AFAIC - As far as I’m concerned; as far as I care; as far as I can AFAIK - As f... Read More

Basics Pitch Beats Sound range Usually the vocal range of a song is only about one octave of the vocal range, and the two vocal ranges are already very wide. Breath (lung capacity) pronunciation (relaxed throat) The key is how to stabilize the vocal position (i.e. larynx position), that ... Read More

If you spend a lot of time typing plain text or writing programs, you can save much of that time by using a good editor and using it effectively. That’s the one big reason you need to learn Vim well. Learning Approaches To learn vim like a wise man, the following approaches are extremely helpful for you. Online Tutorials There’re many articl... Read More