大约有 12,000 项符合查询结果（耗时：0.0294秒） [XML]
Simple logical operators in Bash
...ng1" == "$string2" (beware that the right-hand side is a pattern, e.g. [[ $foo == a* ]] tests if $foo starts with a while [[ $foo == "a*" ]] tests if $foo is exactly a*), and the familiar !, && and || operators for negation, conjunction and disjunction as well as parentheses for grouping. No...
Relative paths in Python
...oesn't appear to be the case on my system (python 2.5.1 on OS X 10.5.7):
#foo.py
import os
print os.getcwd()
print __file__
#in the interactive interpreter
>>> import foo
/Users/jason
foo.py
#and finally, at the shell:
~ % python foo.py
/Users/jason
foo.py
However, I do know that there...
SVN Commit specific files
...Sure. Just list the files:
$ svn ci -m "Fixed all those horrible crashes" foo bar baz graphics/logo.png
I'm not aware of a way to tell it to ignore a certain set of files. Of course, if the files you do want to commit are easily listed by the shell, you can use that:
$ svn ci -m "No longer sets ...
C++使用OLE/COM高速读写EXCEL的源码 - C/C++ - 清泛网 - 专注C/C++及内核技术
...。由于标准的C++没有属性访问器，只能添加一个两个存取函数来实现对属性的访问，通过在属性名称前加上get_和put_前缀分别实现对属性的读写操作。即，由VC自动完成C++类对接口的封装。
本文所导入的接口对应的类和头文件...
How do I provide custom cast support for my class?
...s that users of your class will need to do an explicit conversion:
byte[] foo = new byte[] { 1, 2, 3, 4, 5 };
// explicitly convert foo into an instance of MyClass...
MyClass bar = (MyClass)foo;
// explicitly convert bar into a new byte[] array...
byte[] baz = (byte[])bar;
Using implicit means th...
Bash Templating: How to build configuration files from templates with Bash?
...
Try envsubst
FOO=foo
BAR=bar
export FOO BAR
envsubst <<EOF
FOO is $FOO
BAR is $BAR
EOF
share
|
improve this answer
|
...
How to use a dot “.” to access members of dictionary?
... +1 for simplicity. but doesn't seem to work on nested dicts. d = {'foo': {'bar': 'baz'}}; d = dotdict(d); d.foo.bar throws an attribute error, but d.foo work fine.
– tmthyjames
Jun 10 '16 at 22:28
...
After array_filter(), how can I reset the keys to go in numerical order starting at 0
...s an array with mixed values in it that will expose the trouble:
$array=['foo',NULL,'bar',0,false,null,'0',''];
Null values will be removed regardless of uppercase/lowercase.
But look at what remains in the array when we use array_values() & array_filter():
array_values(array_filter($array)...
Passing an array as a function parameter in JavaScript
...
Function arguments may also be Arrays:
function foo([a,b,c], d){
console.log(a,b,c,d);
}
foo([1,2,3], 4)
of-course one can also use spread:
function foo(a, b, c, d){
console.log(a, b, c, d);
}
foo(...[1, 2, 3], 4)
Scala equivalent of Java java.lang.Class Object
...Nov. 2011, two years later, fixed.
In 2.9.1, getClass now does:
scala> "foo".getClass
res0: java.lang.Class[_ <: java.lang.String] = class java.lang.String
)
Back in 2009:
It would be useful if Scala were to treat the return from getClass() as a java.lang.Class[T] forSome { val T : C...