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Linux的诞生和发展 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...12 (1992.1.15)主要加入对数学协处理器的软件模拟程序。
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1.20 (19...
How do I find out what keystore my JVM is using?
...ti-user Windows NT systems
C:\Windows\Profiles\uName on multi-user Windows 95 systems
C:\Windows on single-user Windows 95 systems
Thus, if the user name is "cathy", "user.home" defaults to
C:\Users\cathy on Windows 7 systems
C:\Winnt\Profiles\cathy on multi-user Windows NT systems
C:\Windows\Pro...
How to split last commit into two in Git
...2" put in the last line):
$ git commit -am "Added last line"
[master 5e284e6] Added last line
1 files changed, 1 insertions(+), 0 deletions(-)
Let's check the log to see what commits we have:
$ git log -p -n2 | cat
Commit 5e284e652f5e05a47ad8883d9f59ed9817be59d8
Author: ...
Date: ...
Added...
How to get the number of characters in a std::string?
...d in UTF-8. There are 3 ways we can talk about the length of this string:
95 bytes
00000000: 5acd a5cd accc becd 89cc b3cc ba61 cc92 Z............a..
00000010: cc92 cd8c cc8b cdaa ccb4 cd95 ccb2 6ccd ..............l.
00000020: a4cc 80cc 9acc 88cd 9ccc a8cd 8ecc b0cc ................
00000030: 9...
Split (explode) pandas dataframe string entry to separate rows
...de() method into the API (also see this answer).
– cs95
Jul 20 '19 at 7:23
...
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...
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 do I concatenate two lists in Python?
...tion for chaining multiple lists (n >> 2).
– cs95
Jun 4 '19 at 14:10
@cs95 slow compared to what?
...
Possible to change where Android Virtual Devices are saved?
... answered Jun 3 '15 at 8:18
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