Tutorial by Topics: its

git send-email [options] <file|directory|rev-list options>…​ git send-email --dump-aliases https://git-scm.com/docs/git-send-email
Git's reflog records the position of HEAD (the ref for the current state of the repository) every time that it is changed. Generally, every operation that might be destructive involves moving the HEAD pointer (since if anything is changed, including in the past, the tip commit's hash will change)...
class Meter(val meters: Double) extends AnyVal type Meter = Double It is recommended to use value classes for units or a dedicated library for them.
Flushes ALL current locks, synching file I/O buffers. This is a non standard extension, available with some COBOL implementations that support ROLLBACK features.
Traits are structural construction objects in the Groovy language. Traits enable implementation of interfaces. They are compatible with static type checking and compilation Traits are behaved as interfaces with default implementations and state. Declaration of a trait is by using the trait keywor...
STL style iterators on Qt Container can have some negative side effect due to the implicit-sharing. It is advised to avoid copying a Qt container while you have iterators active on them. QVector<int> a,b; //2 vectors a.resize(1000); b = a; // b and a now point to the same memory internal...
The COBOL EXIT statement is a terminating flow control verb. EXIT comes is a few flavours: bare EXIT is a common end point for a series of procedures. EXIT PARAGRAPH, EXIT SECTION provides a means of exiting a structured procedure without executing any of the subsequent statements. EXIT FUNC...
Database Transaction Units (DTU) are the unit in which the performance of Azure SQL DB is measured. DTUs make the most sense when used for comparing workloads. For example, a workload that uses 5 DTUs will consume 10 DTUs when doubled. Officialy, Microsoft has introduced the DTU as the average numb...
The Erlang doc titled Bit Syntax has a section called Defaults that contains an error and the doc is confusing as a whole. I rewrote it.
This script is designed to handle reporting devices (IoT), when a device is not previously authorized (in the devices table in the database), I add the new device to a new_devices table. I run an update query, and if affected_rows returns < 1, I insert. When I have a new device report, the first...
Excel specifications and limits (Excel 2016-2013, Excel 2010, Excel 2007) Worksheet and workbook specifications and limits FeatureMaximum limitOpen workbooksLimited by available memory and system resourcesWorksheet size1,048,576 rows by 16,384 columnsColumn width255 charactersRow height40...

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