Blog Posts
excel iso 8601 timestamp conversion to date
Working in Excel is tedious and annoying when using date…
wsl copy to clipboard using ubuntu
It took a little while for me to copy + paste from my WSL…
find all lambdas of a specific code version
When deprecating Lambda runtimes it is important to have…
finding directory sizes using the terminal
Finding directory sizes is important when needing to…
direct proof method
04/12/2022 18:21 | Category: discrete math
Tags: mathdirect_proof
A straightforward approach to establish theorems that doesn't require knowledge…
aws cloudfront for content delivery
04/12/2022 14:28 | Category: aws
Tags: developer_associatecertificationcloudfrontCDN
Distributed servers to deliver webpages and other web content…
cross origin resource sharing CORS configuration
04/12/2022 14:13 | Category: aws
Tags: CORSawss3developer_associatecertification
Cross origin resource sharing allows things like S…
aws s3 encryption
04/12/2022 13:42 | Category: aws
Tags: developer_associatecertifications3
Data can be encrypted in several ways using S3. Encryption types: Encryption in…
securing s3 buckets
04/12/2022 12:53 | Category: aws
Tags: s3certificationdeveloper_associate
By default S3 buckets are relatively quite secure. Default settings Private…
retrieve table size stats and other info from redshift
Often times when looking at table performance…
inspect users in a user group in redshift or postgres
To inspect information about our database/the…
listing stored procedures from redshift
Finding if a stored procedure is in the proper schema is…
closed form formulas for summation of sequences
04/06/2022 20:32 | Category: discrete math
Tags: mathsummationssequencesclosed_form_formulas
There are quite a few useful closed form formulas…
summations in discrete math
04/06/2022 20:06 | Category: discrete math
Tags: mathsummations
An important operation in numerical sequences is adding terms. This is…
sequences in discrete math
04/06/2022 19:51 | Category: discrete math
Tags: mathsequences
Sequences Sequence - A discrete structure used to represent an ordered…
shorthand for domains in math
Domain shorthand can be tricky. This is a quick breakdown: D = Domain…
negations and variants of quantified statements
04/05/2022 20:53 | Category: discrete math
Tags: mathquantified_statements
Negation of a universal statement A universal…
logic of quantified statements
04/05/2022 19:38 | Category: discrete math
Tags: mathquantified_statements
The idea of a quantifier is that it expresses how many of the values…
necessary and sufficient conditions in logic statements
04/01/2022 18:45 | Category: discrete math
Tags: mathlogic_statements
Searching for precise definitions is…
variants of conditional statements
04/01/2022 18:05 | Category: discrete math
Tags: mathconditional_statements
Statements can have conditional relationships that are true in…