大约有 7,000 项符合查询结果（耗时：0.0228秒） [XML]
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
share
...
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.
...
Meaning of epsilon argument of assertEquals for double values
...ith asserting exact floating point values. For instance:
public interface Foo {
double getDefaultValue();
}
public class FooImpl implements Foo {
public double getDefaultValue() { return Double.MIN_VALUE; }
}
In this case, you want to make sure it's really MIN_VALUE, not zero or -MIN_VAL...
Find the most frequent number in a numpy vector
...than scipy.stats.mode, although less general.
– Fred Foo
Jun 6 '11 at 13:14
...
Conveniently map between enum and int / String
...id and are declared in order. (I tested this to verify that if you declare FOO(0), BAR(2), BAZ(1); that values[1] == BAR and values[2] == BAZ despite the ids passed in .)
– corsiKa
Feb 16 '11 at 20:14
...
What is the proper way to format a multi-line dict in Python?
... look like the begin of this part of code
bad_example = {
"foo": "bar", # Don't do this. Unnecessary indentation wastes screen space
"hello": "world" # Don't do this. Omitting the comma is not good.
} # You see? This line visually "joins" the next line when in a glance...