大约有 6,261 项符合查询结果（耗时：0.0186秒） [XML]
GIT commit as different user without email / or only email
...
name family
Set a Git email:
$ git config --global user.email email@foo.com
Confirm that you have set the Git email correctly:
$ git config --global user.email
email@foo.com
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imp...
Pass a data.frame column name to a function
...ock here is that a natural (but incorrect) attempt often looks like this:
foo <- function(df,col_name,col1,col2){
df$col_name <- df$col1 + df$col2
df
}
#Call foo() like this:
foo(dat,z,x,y)
The problem here is that df$col1 doesn't evaluate the expression col1. It simply loo...
Get name of property as a string
...eClass
{
public static string SomeProperty
{
get { return "Foo"; }
}
}
public class RemoteMgr
{
public static void ExposeProperty<T>(Expression<Func<T>> property)
{
var expression = GetMemberInfo(property);
string path = string.Concat(ex...
git command to move a folder inside another
...ails with error
fatal: bad source, source=oldFolderName/somepath/somefile.foo, destination=newFolderName/somepath/somefile.foo
if there are any unadded files, so I just found out.
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Is there a Unix utility to prepend timestamps to stdin?
... line of input you give it. You can format it using strftime too.
$ echo 'foo bar baz' | ts
Mar 21 18:07:28 foo bar baz
$ echo 'blah blah blah' | ts '%F %T'
2012-03-21 18:07:30 blah blah blah
$
To install it:
sudo apt-get install moreutils
...
Understanding __get__ and __set__ and Python descriptors
...an be used to programmatically manage the results of a dotted lookup (e.g. foo.descriptor) in a normal expression, an assignment, and even a deletion.
Functions/methods, bound methods, property, classmethod, and staticmethod all use these special methods to control how they are accessed via the do...
How to detect the physical connected state of a network cable/connector?
...and "cable out" to stdout (assuming the interface is already up):
process foo {
# Wait for device to appear and be configured by udev.
net.backend.waitdevice("eth0");
# Wait for cable to be plugged in.
net.backend.waitlink("eth0");
# Print "cable in" when we reach this point, an...
What is ?= in Makefile
...ariable only if it's not set/doesn't have a value.
For example:
KDIR ?= "foo"
KDIR ?= "bar"
test:
echo $(KDIR)
Would print "foo"
GNU manual: http://www.gnu.org/software/make/manual/html_node/Setting.html
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Is there a way to ignore a single FindBugs warning?
...ly not an option. Example:
<Match>
<Class name="com.mycompany.Foo" />
<Method name="bar" />
<Bug pattern="DLS_DEAD_STORE_OF_CLASS_LITERAL" />
</Match>
However, to solve this issue, FindBugs later introduced another solution based on annotations (see Suppress...
How can I add a help method to a shell script?
...lows the use of long options, and options after non option arguments (e.g. foo a b c --verbose rather than just foo -v a b c). This Stackoverflow answer explains how to use GNU getopt.
† jeffbyrnes mentioned that the original link died but thankfully the way back machine had archived it.
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