Month: February 2018

Computer science: Perl programming: chr() function

Tutoring computer science, character operations with ASCII surface. The tutor mentions Perl’s chr() function. The common English characters one might imagine all have ASCII codes. Tab is 9, Newline is 10, Space is 32, and from 33 to 126 are

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Windows, home computer use: command prompt file operations: xcopy

Maintaining a home computer requires frequent self-tutoring. The tutor shares. This Windows 7 computer no longer performs the COPY command from the mouse, so I use the command prompt to copy files, etc. Lately I’ve been backing up directories, which

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English, botany: what is a pomologist?

More self-tutoring: the tutor shares a term he discovered today. pomologist (noun): one engaged in pomology, which is the science occupied with fruit itself, and/or its production. Source: modernfarmer.com www.collinsdictionary.com www.w3schools.com Jack of Oracle Tutoring by Jack and Diane, Campbell

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Home computer use, computer maintenance, Windows: disk management: how to use unallocated space on a storage device

Home computer use, for me, leads to constant self-tutoring. The tutor shares a video about Windows disk management that he was lucky to find. My experience: On an external hard drive, if Windows calls a part of it “unallocated”, you

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English: vocabulary: what does idiosyncrasy mean?

Tutoring English, meaningful words are always interesting. The tutor mentions idiosyncrasy. .

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Windows: file permissions: what does Bypass Traverse Checking mean?

Researching file permissions can mean self-tutoring. The tutor relays the idea of Bypass Traverse Checking. Bypass Traverse Checking (file permission) This permission allows a user to access a specific file that is not protected, but which resides in a folder

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Calculator usage: negative numbers to rational exponents (with odd roots)

Tutoring high school math, scientific calculators are a permanent fascination. The tutor mentions a quirk many might share. Due to and the fact that a common exponent notation is xa=x^a, it follows that (-8)^(2/3)=4. Curiously, of all the calculators in

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English: what does normative mean?

Tutoring English, vocabulary is always interesting. The tutor defines normative. normative (adj): either setting a standard or following one. The principal watched students perform skateboard tricks in the hall. He observed that, while spectacular, their behaviour wasn’t normative. Source: Barber,

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Handyman role, home maintenance: (at least some) LED bulbs not for installation in completely enclosed fixtures?

Home maintenance, for me, requires constant self-tutoring. The tutor mentions a message he saw on the label of some LED bulbs. I long ago heard that LED bulbs would produce comparable light – or even brighter – for a fraction

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Spreadsheets: Excel: the pi() function

Tutoring math, your curiosity naturally extends to spreadsheets. The tutor points out a neat feature of Excel. If you type =pi() in a cell, the value of π will appear. I find that 14 decimal places are available. Source: www.math.com

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