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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
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Software, devices and technical concepts, explained clearly.
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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
Sparse checkout: fewer working files without erasing history
git sparse-checkout limits which tracked paths appear in the working tree. It can simplify work on a defined part of a large repository.
Published22 Oct 2026
Technology
splice(): change the array itself
The returned array contains the removed elements.
Published22 Oct 2026
Technology
split(): the separator defines the list
Empty parts can also be significant results.
Published22 Oct 2026
Technology
Sqlite3: passing values as query parameters
With sqlite3, parameters separate SQL text from input values. For example, execute('SELECT name FROM items WHERE id = ?', (item_id,)) supplies the identifier separately.
Published22 Oct 2026
Technology
SRI: checking that an external file is the expected version
Subresource Integrity compares the downloaded resource to a predefined cryptographic hash. When updating the file, the expected value must also be updated.
Published22 Oct 2026
Technology
startsWith(): check the start of text
The method is sensitive to upper and lower case letters.
Published22 Oct 2026
Technology
Statistics: mean and median answer different questions
statistics.mean([1, 2, 100]) gives the arithmetic mean, while statistics.median([1, 2, 100]) gives 2. A large observation affects the two measures differently.
Published22 Oct 2026
Technology
String.Template: names in a simple text template
string.Template uses placeholders such as $name for text substitution. substitute() expects the required values; safe_substitute() can leave unresolved placeholders in the result.
Published22 Oct 2026
Technology
StringIO and BytesIO: in-memory streams with different types
io.StringIO handles text, while io.BytesIO handles bytes. They help when a library expects a file-like object but the data is already in memory.
Published22 Oct 2026
Technology
Struct: byte order belongs to the format
struct.pack('>H', 258) produces the two bytes b'\x01\x02'. The > prefix selects big-endian order, while H describes an unsigned short integer in that format.
Published22 Oct 2026