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What is the use of Enumerable.Zip extension method in Linq?
... the MSDN article on the method:
int[] numbers = { 1, 2, 3, 4 };
string[] words = { "one", "two", "three" };
var numbersAndWords = numbers.Zip(words, (first, second) => first + " " + second);
foreach (var item in numbersAndWords)
Console.WriteLine(item);
// This code produces the followin...
How to keep keys/values in same order as declared?
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from collections import OrderedDict
OrderedDict((word, True) for word in words)
contains
OrderedDict([('He', True), ('will', True), ('be', True), ('the', True), ('winner', True)])
If the values are True (or any other immutable object), you can also use:
OrderedDict.f...
C# '@' before a String [duplicate]
...
It also means you can use reserved words as variable names
say you want a class named class, since class is a reserved word, you can instead call your class class:
IList<Student> @class = new List<Student>();
...
Replacing Spaces with Underscores
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You can also do this to prevent the words from beginning or ending with underscores like _words_more_words_, This would avoid beginning and ending with white spaces.
$trimmed = trim($string); // Trims both ends
$convert = str_replace('', '_', $trimmed);
...
Checking whether a string starts with XXXX
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In case you want to match multiple words to your magic word, you can pass the words to match as a tuple:
>>> magicWord = 'zzzTest'
>>> magicWord.startswith(('zzz', 'yyy', 'rrr'))
True
startswith takes a string or a tuple of strings.
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blur vs focusout — any real differences? [duplicate]
...it supports detecting the loss of focus on descendant elements (in
other words, it supports event bubbling).
The same distinction exists between the focusin and focus events.
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How to merge multiple lists into one list in python? [duplicate]
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Ok there is a file which has different words in 'em. I have done s = [word] to put each word of the file in list. But it creates separate lists (print s returns ['it]']['was']['annoying']) as I mentioned above. I want to merge all of them in one list.
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Remove final character from string [duplicate]
...int(list2)
list3 = list2[:-1]
print(list3)
To make it take away the last word in a list:
list1 = input("Enter :")
list2 = list1.split()
print(list2)
list3 = list2[:-1]
print(list3)
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js实现ReplaceAll全部替换 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...则表可以达成Replace 的效果。正则表达式：
str.replace(/word/g,"newWord")
g 的意义是：执行全局匹配（查找所有匹配而非在找到第一个匹配后停止）。
以上写法有个类同的写法：
str.replace(new RegExp("word","gm"),"newWord")
g 执行全局匹...
sed one-liner to convert all uppercase to lowercase?
I have a textfile in which some words are printed in ALL CAPS. I want to be able to just convert everything in the textfile to lowercase, using sed . That means that the first sentence would then read, 'i have a textfile in which some words are printed in all caps.'
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