大约有 6,261 项符合查询结果（耗时：0.0207秒） [XML]
Getting output of system() calls in Ruby
... + $/.size)) # strip trailing eol
rescue
end
end
Example:
p system('foo')
p syscall('foo')
p system('which', 'foo')
p syscall('which', 'foo')
p system('which', 'which')
p syscall('which', 'which')
Yields the following:
nil
nil
false
false
/usr/bin/which <— stdout from system('...
How can I view the source code for a function?
...ot me close to what I wanted. What I actually wanted, in RStudio, was View(foo); where foo was a function from an already loaded package.
– Sigfried
Feb 28 '19 at 11:35
1
...
Python TypeError: not enough arguments for format string
...
I got a variation of this error due to typo: "foo: %(foo)s, bar: s(bar)% baz: %(baz)s" % {"foo": "FOO", "bar": "BAR", "baz": "BAZ"}
– Akavall
Mar 20 '18 at 17:57
...
How to remove duplicate white spaces in string using Java?
...$1.
Java code:
str = str.replaceAll("(\\s)\\1","$1");
If the input is "foo\t\tbar " you'll get "foo\tbar " as outputBut if the input is "foo\t bar" it will remain unchanged because it does not have any consecutive whitespace characters.
If you treat all the whitespace characters(space, vertica...
psql - save results of command to a file
... privileges and will write to a file on the server.
Example: COPY (SELECT foo, bar FROM baz) TO '/tmp/query.csv' (format csv, delimiter ';')
Creates a CSV file with ';' as the field separator.
As always, see the documentation for details
...
How to pass a function as a parameter in Java? [duplicate]
...
@TomeeNS - here is a simple example, where foo() is the function passed as a parameter, and demo() is the function that takes a function as a parameter. void demo(final Callable<Void> func){ func.call(); } void foo(){ return null; } demo(new Calla...
Using Mockito with multiple calls to the same method with the same arguments
...he calls are chainable.
So you could call
when(mock.method()).thenReturn(foo).thenReturn(bar).thenThrow(new Exception("test"));
//OR if you're mocking a void method and/or using spy instead of mock
doReturn(foo).doReturn(bar).doThrow(new Exception("Test").when(mock).method();
More info in Mock...
What is the difference between const_iterator and non-const iterator in the C++ STL?
...wing thoughts on the topic. With simple pointers, one can say int const * foo; int * const foo; and int const * const foo;all three are valid and useful, each in their own way. std::vector<int> const bar should be the same as the second one, but it is unfortunately often treated like the thi...
Measure and Benchmark Time for Ruby Methods
...
The simplest way:
require 'benchmark'
def foo
time = Benchmark.measure {
code to test
}
puts time.real #or save it to logs
end
Sample output:
2.2.3 :001 > foo
5.230000 0.020000 5.250000 ( 5.274806)
Values are: cpu time, system time, total and real...
How can I set the Sender's address in Jenkins?
...ch is the same as the account email address. For example sake, say this is foo@mycompany.com. How can I make jenkins always send mail from foo@mycompany.com?
...