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Getting JavaScript object key list
... answered Jun 18 '10 at 9:32
zed_0xffzed_0xff
28.2k77 gold badges4747 silver badges7070 bronze badges
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Map over object preserving keys
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With Underscore
Underscore provides a function _.mapObject to map the values and preserve the keys.
_.mapObject({ one: 1, two: 2, three: 3 }, function (v) { return v * 3; });
// => { one: 3, two: 6, three: 9 }
DEMO
With Lodash
Lodash provides a function _.mapVa...
ImportError: Cannot import name X
...s something like this.
a = module() # import a
# rest of module
a.update_contents(real_a)
For python to be able to work with circular dependencies you must use import x style only.
import x
class cls:
def __init__(self):
self.y = x.y
Since you are no longer referring to the conte...
How to change the Eclipse default workspace?
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On ubuntu I went to ~/.eclipse/org.eclipse.platform_4.3.0_1473617060_linux_gtk_x86_64/configuration/config.ini and added this line osgi.instance.area.default=@user.home/workspace pointing it to where ever i wanted.
– Jerinaw
Feb 7 '14 at...
Generate random numbers using C++11 random library
...lude <random>
#include <iostream>
int main() {
std::random_device rd;
std::mt19937 mt(rd());
std::uniform_real_distribution<double> dist(1.0, 10.0);
for (int i=0; i<16; ++i)
std::cout << dist(mt) << "\n";
}
We use random_device once to see...
Email validation using jQuery
...javascript for that:
function isEmail(email) {
var regex = /^([a-zA-Z0-9_.+-])+\@(([a-zA-Z0-9-])+\.)+([a-zA-Z0-9]{2,4})+$/;
return regex.test(email);
}
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Learning Python from Ruby; Differences and Similarities
...at to the collection each method (if list supported this method):
def some_operation(value):
...
collection.each(some_operation)
That doesn't flow very nicely. So, typically the following non-functional approach would be used in Python:
for value in collection:
...
Using resources in a sa...
Is it possible to use 'else' in a list comprehension? [duplicate]
..., 2, 3]
So for your example,
table = ''.join(chr(index) if index in ords_to_keep else replace_with
for index in xrange(15))
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为什么编译好的libcurl静态lib用不了？ - C/C++ - 清泛网 - 专注C/C++及内核技术
...an application that uses the static libcurl library, you must
add -DCURL_STATICLIB to your CFLAGS. Otherwise the linker will look for
dynamic import symbols. If you get linker error like "unknown symbol
__imp__curl_easy_init ..." you have linked against the wrong (static)
library. If you...
Writing handler for UIAlertAction
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{alert in println("Foo")}, {_ in println("Foo")}, and {println("Foo")} should also work.
– Brian Nickel♦
Jun 12 '14 at 17:44
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