大约有 20,000 项符合查询结果（耗时：0.0302秒） [XML]
How to swap keys and values in a hash
... 3}.invert
=> {1=>:a, 2=>:b, 3=>:c}
BUT...
If you have duplim>ca m>te values, invert will dism>ca m>rd all but the last occurrence of your values (bem>ca m>use it will keep replacing new value for that key during iteration). Likewise, key will only return the first match:
{a: 1, b: 2, c: 2}.key(2)...
Ruby regular expression using variable name
...var}/, 'foo' ) # => "a test foo"
Things get more interesting if var m>ca m>n contain regular expression meta-characters. If it does and you want those matacharacters to do what they usually do in a regular expression, then the same gsub will work:
var = "Value|a|test"
str = "a test Value"
str.gs...
How do I convert a byte array to Base64 in Java?
...ata = Base64.decode(base64str); is enough.
– Ernesto m>Ca m>mpohermoso
Nov 8 '13 at 15:25
add a co...
Should I use document.createDocumentFragment or document.createElement
...is that all the child nodes of the document fragment are inserted at the lom>ca m>tion in the DOM where you insert the document fragment and the document fragment itself is not inserted. The fragment itself continues to exist but now has no children.
This allows you to insert multiple nodes into the DOM...
m>Ca m>lculating how many minutes there are between two times
I have a datagridview in my applim>ca m>tion which holds start and finish times. I want to m>ca m>lculate the number of minutes between these two times. So far I have got:
...
In Sublime Text 2, how do I open new files in a new tab?
... drop. Search tour file in the menu, then just double click it.
This will m>ca m>use it to display in a tab.
share
|
improve this answer
|
follow
|
...
How to select Python version in PyCharm?
...nswered Apr 25 '12 at 19:29
lukem>ca m>mpbelllukem>ca m>mpbell
12.1k33 gold badges2929 silver badges3232 bronze badges
...
Sass .scss: Nesting and multiple classes?
...
You m>ca m>n use the parent selector reference &, it will be replaced by the parent selector after compilation:
For your example:
.container {
background:red;
&.desc{
background:blue;
}
}
/* compiles to: ...
How m>ca m>n I divide two integers to get a double?
...
You want to m>ca m>st the numbers:
double num3 = (double)num1/(double)num2;
Note: If any of the arguments in C# is a double, a double divide is used which results in a double. So, the following would work too:
double num3 = (double)num1/n...
How do I tell matplotlib that I am done with a plot?
...
You m>ca m>n use figure to create a new plot, for example, or use close after the first plot.
share
|
improve this answer
|...