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How to use filter, map, and reduce in Python 3
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You do not need to create extra functions in list comprehensions. Just use [i*i*i for i in range(1,11)]
– Xiao
Jul 22 '14 at 3:25
2...
Convert a list of characters into a string
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Use the join method of the empty string to join all of the strings together with the empty string in between, like so:
>>> a = ['a', 'b', 'c', 'd']
>>> ''.join(a)
'abcd'
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How to get pixel data from a UIImage (Cocoa Touch) or CGImage (Core Graphics)?
... CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
unsigned char *rawData = (unsigned char*) calloc(height * width * 4, sizeof(unsigned char));
NSUInteger bytesPerPixel = 4;
NSUInteger bytesPerRow = bytesPerPixel * width;
NSUInteger bitsPerComponent = 8;
CGContextRef c...
C/C++ Struct vs Class
... examples given:
struct Pair { // the members can vary independently
string name;
int volume;
};
// but
class Date {
public:
// validate that {yy, mm, dd} is a valid date and initialize
Date(int yy, Month mm, char dd);
// ...
private:
int y;
Month m;
char d; //...
Changing password with Oracle SQL Developer
... Thank you, it worked on Windows 7 64bit. I did have to go through an extra step though (which is the same as the first step on OS X config above), otherwise the 'reset password' option would remain grayed out. 4. Set path to Instant Client in Preferences -> Database -> Advanced -> Us...
querySelector and querySelectorAll vs getElementsByClassName and getElementById in JavaScript
...e to escape it. (The selector escape character has special meaning in a JS string too, so you have to escape that too).
document.querySelector("#view\\:_id1\\:inputText1")
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How to escape a JSON string containing newline characters using JavaScript?
I have to form a JSON string in which a value is having new line character. This has to be escaped and then posted using AJAX call. Can any one suggest a way to escape the string with JavaScript. I am not using jQuery.
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How to atomically delete keys matching a pattern using Redis
...helped me out. Another variant if your redis keys contain quotes or other characters that mess up xargs: redis-cli KEYS "prefix:*" | xargs --delim='\n' redis-cli DEL
– overthink
Sep 16 '11 at 13:31
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Converting a List to a comma separated string
Is there a way to take a List and convert it into a comma separated string?
8 Answers
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JSON.stringify without quotes on properties?
...most cases:
const object = { name: 'John Smith' };
const json = JSON.stringify(object); // {"name":"John Smith"}
console.log(json);
const unquoted = json.replace(/"([^"]+)":/g, '$1:');
console.log(unquoted); // {name:"John Smith"}
Extreme case:
var json = '{ "name": "J\\":ohn Smit...