YAML
Loading YAML in Python With PyYAML safe_load Explained
What yaml.safe_load returns, how to open files correctly, why the C loader is six times faster and the type surprises that come with PyYAML.
6 min read
Topic
Scripting
Shell one-liners and small scripts that turn your repeated database chores into a single command.
XML
Checking Feed Health With a Daily Script and Clear Alerts
A feed health check that tests the fetch, status, content type, well-formedness, item count and freshness, run on eight scenarios with its output.
6 min read
Excel
Reading Excel Files in Node With exceljs Step by Step
Read and write xlsx in Node.js with exceljs: load a workbook, read typed cells, handle formulas and dates, stream large sheets and avoid common traps.
7 min read
XML
Calling a SOAP Service From Python With zeep and a WSDL
Call a SOAP service from Python with zeep: load the WSDL, call an operation, get typed results, handle a Fault, see the request envelope,.
7 min read
Excel
Testing That a Generated Excel Report Is Actually Correct
Test a generated Excel report with pytest: structure, control totals, formulas, formats and edge cases, plus a fixture of bad input and a golden file.
8 min read
XML
Running XSLT in Python With lxml and What It Reports
Compile a stylesheet once with lxml, pass parameters safely, read xsl:message from the error log, block file and network reads, and know the 1.0 limit.
7 min read
JSON
Using JSON in Bash Scripts Safely With jq Arguments
Build and read JSON in Bash without breaking: jq --arg instead of string concatenation, newlines in values, exit codes, null as text and filter injection.
7 min read
JSON
Reading JSON in Ruby With the json Gem and Its Options
JSON.parse in Ruby 3.4 with json 2.9.1: symbolized keys, big numbers, NaN, comments that parse by default, max_nesting 100, create_additions and errors.
6 min read
JSON
Reading JSON in PHP With json decode and Throw on Error
json_decode in PHP 8.5 returns null on bad input unless you throw. Arrays or objects, big integers, depth 512, flags and the list versus object trap.
6 min read
JSON
Reading JSON in Rust With serde json and Typed Structs
Read JSON in Rust with serde_json 1.0.154: derived structs, Option and null, deny_unknown_fields, duplicates, integer ranges, the 128 level limit and enums.
6 min read
JSON
Reading JSON in C Sharp With System Text Json Defaults
What System.Text.Json does by default in .NET 9: exact-case names, JsonSerializerDefaults.Web, enum surprises, the 64 level depth limit and duplicate keys.
6 min read
JSON
Reading JSON in Java With Jackson Records and Trees
Read JSON in Java with Jackson 2.20: records, JsonNode trees, unknown fields, duplicate keys, the nesting and number limits, and the date trap on writing.
6 min read
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