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Double Iteration in List Comprehension
...
I hope this helps someone else since a,b,m>x m>,y don't have much meaning to me! Suppose you have a tem>x m>t full of sentences and you want an array of words.
# Without list comprehension
list_of_words = []
for sentence in tem>x m>t:
for word in sentence:
list_of_word...
Are PHP Variables passed by value or by reference?
...he argument name in the function definition.
<?php
function add_some_em>x m>tra(&$string)
{
$string .= 'and something em>x m>tra.';
}
$str = 'This is a string, ';
add_some_em>x m>tra($str);
echo $str; // outputs 'This is a string, and something em>x m>tra.'
?>
...
What is the difference between “def” and “val” to define a function
...unction on every call:
val test: () => Int = {
val r = util.Random.nem>x m>tInt
() => r
}
test()
// Int = -1049057402
test()
// Int = -1049057402 - same result
def test: () => Int = {
val r = util.Random.nem>x m>tInt
() => r
}
test()
// Int = -240885810
test()
// Int = -1002157461 - ne...
Swift make method parameter mutable?
...lare an inout parameter. Think: passing in a pointer.
func reduceToZero(_ m>x m>: inout Int) {
while (m>x m> != 0) {
m>x m> = m>x m>-1
}
}
var a = 3
reduceToZero(&a)
print(a) // will print '0'
This can be particularly useful in recursion.
Apple's inout declaration guidelines can be found h...
How to add tem>x m>ture to fill colors in ggplot2
... the online ggplot2 documentation but didn't see anything about adding tem>x m>tures to fill colors. Is there an official ggplot2 way to do this or does anyone have a hack that they use? By tem>x m>tures I mean things like diagonal bars, reverse diagonal bars, dot patterns, etc that would differentiate fi...
How to “properly” create a custom object in JavaScript?
... closure way. Both have advantages and drawbacks, and there are plenty of em>x m>tended variations. Many programmers and libraries have different approaches and class-handling utility functions to paper over some of the uglier parts of the language.
The result is that in mim>x m>ed company you will have a mi...
Replace values in list using Python [duplicate]
...
Build a new list with a list comprehension:
new_items = [m>x m> if m>x m> % 2 else None for m>x m> in items]
You can modify the original list in-place if you want, but it doesn't actually save time:
items = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
for indem>x m>, item in enumerate(items):
if not (ite...
What is a ViewModelLocator and what are its pros/cons compared to DataTemplates?
...is approach: it doesn't play well with visual designers such as Microsoft Em>x m>pression Blend.
The problem is that in both normal application runs and unit test runs, someone has to set up the container with instructions on what types to resolve; additionally, someone has to ask the container to resol...
What makes Lisp macros so special?
...of using Lisp macros. As someone who wants to understand the buzz, please em>x m>plain what makes this feature so powerful.
14 A...
微软VS苹果 桌面操作系统的终极一战 - 创意 - 清泛网 - 专注C/C++及内核技术
...桌面操作系统的终极一战苹果将在九月份推出正式版的OS m>X m> El Capitan。虽然对于苹果来说，这看上去只是每年一次的例行升级，不过结合微软在7月底的大动作，今年的桌面操作系统大战，很有可能是这两家巨头厂商对于抢夺用户...