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常用Linux命令详解（持续更新） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...。范例如下:
显示当前目录的内容
[root@KEDACOM ~]# ls
NRU_CMU_DISK_SIZE_NOTIFY2008 anaconda-ks.cfg install.log install.log.syslog
显示名称以“.”开头的隐藏文件
[root@KEDACOM ~]# ls -a
.bash_histor .bash_profile .cshrc .ssh NRU_CMU_DISK_SIZE_NOTIFY2008 install...
Text Progress Bar in the Console [closed]
...any of the answers below that I use regularly (no imports required).
Note: All code in this answer was created for Python 3; see end of answer to use this code with Python 2.
# Print iterations progress
def printProgressBar (iteration, total, prefix = '', suffix = '', decimals = 1, length = 100, fil...
How to correct indentation in IntelliJ
How can indentation be automatically (not manually) corrected in IntelliJ?
7 Answers
7...
Getting a list of values from a list of dicts
... simple at first glance, because find returns match objects, which include all kinds of things besides just the matched value, such as a path directly to each item. But for more complex expressions, being able to specify a path like '*.[*].value' instead of a comprehension clause for each * can make...
How to get git diff with full context?
... the issue, but using a line count promises that it will work for even a small change in a very large file.
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Why use pointers? [closed]
...aks and you're trying to track down a bug that belongs to a whole class of errors that pointers introduce, like memory corruption.
So if you control all of your code, stay away from pointers and instead use references, keeping them const when you can. This will force you to think about the life ti...
What is “entropy and information gain”?
...rees (nor is it guaranteed to be globally-optimal one w.r.t classification error). This is in fact an NP-complete problem...
– Amro
May 29 '15 at 15:16
1
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Cleanest way to write retry logic?
...
+1, especially for the warning and error-checking. I'd be more comfortable if this passed in the type of the exception to catch as a generic parameter (where T: Exception), though.
– TrueWill
Oct 13 '09 at 22:55
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Expert R users, what's in your .Rprofile? [closed]
...tryCatch(
{options(
width = as.integer(Sys.getenv("COLUMNS")))},
error = function(err) {
write("Can't get your terminal width. Put ``export COLUMNS'' in your \
.bashrc. Or something. Setting width to 120 chars",
stderr());
options(width=120)}
)
This way R wi...
Can I zip more than two lists together in Scala?
...
Scala treats all of its different tuple sizes as different classes (Tuple1, Tuple2, Tuple3, Tuple4,...,Tuple22) while they do all inherit from the Product trait, that trait doesn't carry enough information to actually use the data values ...