大约有 40,000 项符合查询结果（耗时：0.0343秒） [XML]
How to access object attribute given string corresponding to name of that attribute
...ay prefer to use a generalized getter method like so:
class Test:
def __init__(self):
self.attr1 = 1
self.attr2 = 2
def get(self,varname):
return getattr(self,varname)
t = Test()
x = "attr1"
print ("Attribute value of {0} is {1}".format(x, t.get(x)))
Outputs:
At...
Should all Python classes extend object?
...;>> class Bar(object): pass
...
>>> type(Bar())
<class '__main__.Bar'>
Also the rules for multiple inheritance are different in ways that I won't even try to summarize here. All good documentation that I've seen about MI describes new-style classes.
Finally, old-style classe...
How to paste over without overwriting register
...o hide this function (yet)
function! RestoreRegister()
let @" = s:restore_reg
return ''
endfunction
function! s:Repl()
let s:restore_reg = @"
return "p@=RestoreRegister()\<cr>"
endfunction
" NB: this supports "rp that replaces the selection by the contents of @r
vnoremap <sile...
printf format specifiers for uint32_t and size_t
...
Sounds like you're expecting size_t to be the same as unsigned long (possibly 64 bits) when it's actually an unsigned int (32 bits). Try using %zu in both cases.
I'm not entirely certain though.
...
How to add title to subplots in Matplotlib?
...
ax.title.set_text('My Plot Title') seems to work too.
fig = plt.figure()
ax1 = fig.add_subplot(221)
ax2 = fig.add_subplot(222)
ax3 = fig.add_subplot(223)
ax4 = fig.add_subplot(224)
ax1.title.set_text('First Plot')
ax2.title.set_text('Se...
How to customize the background/border colors of a grouped table view cell?
...kgroundView.h
//
// Created by Mike Akers on 11/21/08.
// Copyright 2008 __MyCompanyName__. All rights reserved.
//
#import <UIKit/UIKit.h>
typedef enum {
CustomCellBackgroundViewPositionTop,
CustomCellBackgroundViewPositionMiddle,
CustomCellBackgroundViewPositionBottom,
...
Can I use multiple versions of jQuery on the same page?
...1.3.js"></script>
<script type="text/javascript">
var jQuery_1_1_3 = $.noConflict(true);
</script>
<!-- load jQuery 1.3.2 -->
<script type="text/javascript" src="http://example.com/jquery-1.3.2.js"></script>
<script type="text/javascript">
var jQuery_1_3...
How to output a multiline string in Bash?
...ters. This seems reasonably portable to me (I ran it on MacOS and Ubuntu)
__usage="
Usage: $(basename $0) [OPTIONS]
Options:
-l, --level <n> Something something something level
-n, --nnnnn <levels> Something something something n
-h, --help ...
Local variables in nested functions
...s to the function, with the code using an index to reference each cell. pet_function thus has one free variable (cage) which is then referenced via a closure cell, index 0. The closure itself points to the local variable cage in the get_petters function.
When you actually call the function, that cl...
Can you find all classes in a package using reflection?
...0, file.getName().length() - 6)));
}
}
return classes;
}
__________
1 This method was taken originally from http://snippets.dzone.com/posts/show/4831, which was archived by the Internet Archive, as linked to now. The snippet is also available at https://dzone.com/articles/get-all-c...