resumeTechnology
Set: remove repeated values with clear borders
Set keeps unique values. However, two separately created objects remain different, even if their properties appear to be the same.
Published22 Oct 2026
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Technology
sort(): why numbers are sometimes arranged as text
sort() changes the array itself. Without a comparison function, values are compared by their textual representation.
Published22 Oct 2026
Technology
reduce(): the sum starts from a clear starting value
reduce() passes an accumulated result from one array element to the next.
Published22 Oct 2026
Technology
every(): why the empty list can also return true
every() checks that all elements meet a condition. In an empty array, there is no element to break it.
Published22 Oct 2026
Technology
some(): is there at least one suitable element?
some() answers with true or false. Use it as a presence question when you don't need the found record yourself.
Published22 Oct 2026
Technology
find(): returning the first matching item
find() returns the first appropriate item, not a list. In the absence of a match, the result is undefined.
Published22 Oct 2026
Technology
filter(): selecting array items without inventing replacements
filter() preserves the elements that fulfill a condition. The result may be shorter than the entrance or it may be empty.
Published22 Oct 2026
Technology
map(): transforming each item in an array
map() creates a new array of results per function. It is appropriate when we want a new value from each input element.
Published22 Oct 2026
Cars
Knock sensors: what vibrations reveal about combustion
The sensor picks up characteristic vibrations and feeds them to the controls. He does not listen to the engine as a person and is not self-diagnosed for any unusual sound.
Published22 Oct 2026
Cars
Summer, winter and all-season tyres: various design compromises
Categories use different mixtures and patterns for different conditions. The generic name does not replace the specific specification and data for the selected model.
Published22 Oct 2026
Cars
Wheel balancing and alignment: two different tasks
Balance refers to the distribution of the wheel's mass, and regulation to geometrical positions. One is not a universal substitute for the other.
Published22 Oct 2026
Cars
Tyre marking: width, profile and diameter
The numbers on the sidewall describe different characteristics. They should be read as a system, not as an arbitrary series of dimensions.
Published22 Oct 2026