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Changing column names of a data frame
...k it was asked for data.frame, not data.table
– Helix123
Apr 16 '15 at 19:15
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Interactive search/replace regex in Vim?
...
I think you're looking for c, eg s/abc/123/gc, this will cause VIM to confirm the replacements. See :help :substitute for more information.
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How to replace all dots in a string using JavaScript
...our case :). Thanks for providing the link!
– testing123
Sep 28 '12 at 4:41
3
If you use RegExp, ...
How to find all occurrences of an element in a list?
...
123
While not a solution for lists directly, numpy really shines for this sort of thing:
import n...
How to add and get Header values in WebApi
...oducts/10',
type: 'GET',
headers: { 'username': 'test','password':'123' },
success: function (data) {
alert(data);
},
failure: function (result) {
alert('Error: ' + result);
}
});
Hope this helps someone ...
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Is there shorthand for returning a default value if None in Python? [duplicate]
...
123
return "default" if x is None else x
try the above.
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Is dp the same as dip? [duplicate]
...
123
Yes, they are the same. There is no difference, its just an alias.
Documentation:
The com...
javascript pushing element at the beginning of an array [duplicate]
...
123
Use .unshift() to add to the beginning of an array.
TheArray.unshift(TheNewObject);
See MDN...
Awkward way of executing JavaScript code [duplicate]
...der the following:
var a = (function(){
var ret = {};
ret.test = "123";
function imPrivate() { /* ... */ }
ret.public = function() { imPrivate(); }
return ret;
})();
a will contain the varible test and the function public, however you can not access imPrivate. This is the comm...
c语言编程中%g是什么格式？ - C/C++ - 清泛网 - 专注C/C++及内核技术
...科学记数法还是一般的小数记数法。
printf("%g\n", 0.00001234); //输出结果：1.234e-05
printf("%g\n", 0.0001234); //输出结果：0.0001234
printf("%.2g\n", 123.45); //输出结果：1.2e+02
printf("%.2g\n", 23.45); //输出结果：23
对于指数小于-4或者大...