No error , No gain

I have two Python dictionaries, and I want to write a single expression that returns these two dictionaries, merged (i.e. taking the union). The update() method would be what I need, if it returned its result instead of modifying a dictionary in-place. >>> x = {'a': 1, 'b': 2} >>> y = {'b': 10, 'c': 11} >>> z = x.update(y) >>> print(z) None >>> x {'a': 1, 'b': 10, 'c': 11} How can I get that fin..

I'd like to move the last several commits I've committed to master to a new branch and take master back to before those commits were made. Unfortunately, my Git-fu is not strong enough yet, any help? I.e. How can I go from this master A - B - C - D - E to this? newbranch C - D - E / master A - B Moving to an existing branch If you want to move your commits to an existing branch, it will look lik..

If Python does not have a ternary conditional operator, is it possible to simulate one using other language constructs? Yes, it was added in version 2.5. The expression syntax is: a if condition else b First condition is evaluated, then exactly one of either a or b is evaluated and returned based on the Boolean value of condition. If condition evaluates to True, then a is evaluated and returned ..

Want to improve this post? Provide detailed answers to this question, including citations and an explanation of why your answer is correct. Answers without enough detail may be edited or deleted. What are the differences between git pull and git fetch? In the simplest terms, git pull does a git fetch followed by a git merge. You can do a git fetch at any time to update your remote-tracking branc..

This question's answers are a community effort. Edit existing answers to improve this post. It is not currently accepting new answers or interactions. How can I redirect the user from one page to another using jQuery or pure JavaScript? One does not simply redirect using jQuery jQuery is not necessary, and window.location.replace(...) will best simulate an HTTP redirect. window.location.replace(..

Recently, I ran some of my JavaScript code through Crockford's JSLint, and it gave the following error: Problem at line 1 character 1: Missing "use strict" statement. Doing some searching, I realized that some people add "use strict"; into their JavaScript code. Once I added the statement, the error stopped appearing. Unfortunately, Google did not reveal much of the history behind this string st..

Say I create an object as follows: let myObject = { "ircEvent": "PRIVMSG", "method": "newURI", "regex": "^http://.*" }; How should I remove the property regex to end up with new myObject as follows? let myObject = { "ircEvent": "PRIVMSG", "method": "newURI" }; To remove a property from an object (mutating the object), you can do it like this: delete myObject.regex; // or, delete myObject['regex'..

After reading Hidden Features and Dark Corners of C++/STL on comp.lang.c++.moderated, I was completely surprised that the following snippet compiled and worked in both Visual Studio 2008 and G++ 4.4. Here's the code: #include int main() { int x = 10; while (x --> 0) // x goes to 0 { printf("%d ", x); } } Output: 9 8 7 6 5 4 3 2 1 0 I'd assume this is C, since it works in GCC as well. Where is th..

Given the following code, what does the if __name__ == "__main__": do? # Threading example import time, thread def myfunction(string, sleeptime, lock, *args): while True: lock.acquire() time.sleep(sleeptime) lock.release() time.sleep(sleeptime) if __name__ == "__main__": lock = thread.allocate_lock() thread.start_new_thread(myfunction, ("Thread #: 1", 2, lock)) thread.start_new_thread(myfunction..

What is the difference between Android units of measure? px dip dp sp From the Android Developer Documentation: px > Pixels - corresponds to actual pixels on the screen. in > Inches - based on the physical size of the screen. > 1 Inch = 2.54 centimeters mm > Millimeters - based on the physical size of the screen. pt > Points - 1/72 of an inch based on the physical size of the screen. dp or dip >..