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What is the difference between a strongly typed language and a statically typed language?
...e checked before being executed, and a program might be rejected before it starts. Dynamic typing means that the types of values are checked during execution, and a poorly typed operation might cause the program to halt or otherwise signal an error at run time. A primary reason for static typing i...
How does a public key verify a signature?
...upon hours learning how elliptic curve cryptography works (here is a great starting point)... OR...
You can accept the properties above--just like you accept Newton's 3 laws of motion without needing to derive them yourself.
In conclusion, a public/private keypair is created using elliptic curve c...
What is hashCode used for? Is it unique?
...rovider was based on the
System.Collections.IHashCodeProvider interface. Starting with version
2.0, the hash code provider is based on the
System.Collections.IEqualityComparer interface.
Basically, hash codes exist to make hashtables possible.
Two equal objects are guaranteed to have equal h...
Git commits are duplicated in the same branch after doing a rebase
...3
3cb46a9 HEAD@{6}: cherry-pick: fast-forward
85f59ab HEAD@{7}: rebase -i (start): checkout HEAD~~~
2a2e220 HEAD@{8}: rebase -i (finish): returning to refs/heads/master
2a2e220 HEAD@{9}: rebase -i (start): checkout refs/remotes/origin/master
2a2e220 HEAD@{10}: commit: C5
ab1bda4 HEAD@{11}: commit: C...
Various ways to remove local Git changes
...
It all depends on exactly what you are trying to undo/revert. Start out by reading the post in Ube's link. But to attempt an answer:
Hard reset
git reset --hard [HEAD]
completely remove all staged and unstaged changes to tracked files.
I find myself often using hard resetting, when...
Byte order mark screws up file reading in Java
...very good way to detect what encoding some bytes are in, but if the stream starts with a BOM, apparently this can be helpful.
Edit: If you need to detect the BOM in UTF-16, UTF-32, etc, then the constructor should be:
new BOMInputStream(is, ByteOrderMark.UTF_8, ByteOrderMark.UTF_16BE,
Byte...
Filter rows which contain a certain string
...are the following reasons.
The functions provided by the stringr package start with the prefix str_, which makes the code easier to read.
The first argument of the functions of stringr package is always the data.frame (or value), then comes the parameters.(Thank you Paolo)
object <- "stringr"...
How to elegantly deal with timezones
...s section on sf4answers, users enter an address for an event, as well as a start date and an optional end date. These times are translated into a datetimeoffset in SQL server that accounts for the offset from UTC.
This is the same problem you are facing (although you are taking a different approac...
What's your favorite “programmer” cartoon?
...ed this theory during a talk at Google: youtube.com/watch?v=zJOS0sV2a24 -- start at 8:26 or so. The talk is also exciting because Donald Knuth asks the first question!
– A. Rex
Sep 23 '08 at 1:07
...
Adding the “Clear” Button to an iPhone UITextField
...
Fix enum type. Must not start from capital letter.
– T. Pasichnyk
Jun 20 '17 at 11:40
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