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Access lapply index names inside FUN
...ormance loss? Yes! here are the benchmarks:
> x <- as.list(seq_len(1e6))
> system.time( y <- lapply(x, function(x){parent.frame()$i[]}) )
user system elapsed
2.38 0.00 2.37
> system.time( y <- lapply(x, function(x){parent.frame()$i[]}) )
user system elapsed
2.45 0.00 2.45
> sy...
Using Emacs to recursively find and replace in text files not already open
...ace the thing at point: gist.github.com/anonymous/055a9d62f9fc824153599724b8f44d57
– Att Righ
May 2 '17 at 11:31
can I...
How do I check out a remote Git branch?
...jects: 100% (69/69), done.
From https://github.com/githubuser/repo-name
e6ef1e0..5029161 develop -> origin/develop
* [new branch] demo -> origin/demo
d80f8d7..359eab0 master -> origin/master
$ git checkout demo
Branch demo set up to track remote branch demo from ...
Combining multiple git repositories
... SVN import it may fail with a message like:
Rewrite 422a38a0e9d2c61098b98e6c56213ac83b7bacc2 (1/42)mv: cannot stat `/home/.../wikis/nodows/.git-rewrite/t/../index.new': No such file or directory
In this case you need to exclude the initial revision from the filter-branch - i.e. change the HEAD a...
How to initialize an array's length in JavaScript?
... F8, G8, H8],
// [A7, B7, C7, D7, E7, F7, G7, H7],
// [A6, B6, C6, D6, E6, F6, G6, H6],
// [A5, B5, C5, D5, E5, F5, G5, H5],
// [A4, B4, C4, D4, E4, F4, G4, H4],
// [A3, B3, C3, D3, E3, F3, G3, H3],
// [A2, B2, C2, D2, E2, F2, G2, H2],
// [A1, B1, C1, D1, E1, F1, G1, H1] ]
...
extra qualification error in C++
...d. Otherwise, you get an undefined reference. coliru.stacked-crooked.com/a/8f8a0cd3f9db6c94 coliru.stacked-crooked.com/a/6cd1efe94c09d521
– Zoe
May 20 at 9:19
add a comment
...
Reliable method to get machine's MAC address in C#
...facturer to uniquely identify the network adapter.
Example: "00:80:C7:8F:6C:96"
If you're not familiar with the WMI API (Windows Management Instrumentation), there's a good overview here for .NET apps.
WMI is available across all version of windows with the .Net runtime.
Here's a code examp...
Git Tag list, display commit sha1 hashes
...6af34da781a7f730d6ddd557a1 commit refs/tags/1.4.6
62ec20337a4125496bd4f56288f3283963153194 commit refs/tags/1.4.5
Result with annotated tags:
e2b2d6a172b76d44cb7b1ddb12ea5bfac9613a44 commit refs/tags/v2.11.0-rc3^{}
1310affe024fba407bff55dbe65cd6d670c8a32d commit refs/tags/v2.11.0-rc2^{}
3ab228137...
How to recover a dropped stash in Git?
...his:
$ git stash pop
[...]
Dropped refs/stash@{0} (2ca03e22256be97f9e40f08e6d6773c7d41dbfd1)
(Note that git stash drop also produces the same line.)
To get that stash back, just run git branch tmp 2cae03e, and you'll get it as a branch. To convert this to a stash, run:
git stash apply tmp
git s...
Can two different strings generate the same MD5 hash code?
...simple test using very similar binary message in hex string:
$ echo '4dc968ff0ee35c209572d4777b721587d36fa7b21bdc56b74a3dc0783e7b9518afbfa200a8284bf36e8e4b55b35f427593d849676da0d1555d8360fb5f07fea2' | xxd -r -p | tee >/dev/null >(md5) >(sha1sum)
c6b384c4968b28812b676b49d40c09f8af4ed4cc -
...