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What is an optional value in Swift?
...g and writing code more fluent. Unfortunately this obscures the way it actually works. I'll go through some of the tricks later.
Note: I'll be talking about optional variables a lot, but it's fine to create optional constants too. I mark all variables with their type to make it easier to understand ...
Preferred Github workflow for updating a pull request after code review
...pull request and push the branch to GitHub. The pull request will automatically be updated with the additional commit.
#2 and #3 are unnecessary. If people want to see only where your branch was merged in (and not the additional commits), they can use git log --first-parent to only view the merge c...
Python: print a generator expression?
...e generator expression into a list comprehension. It's the same thing and calling list() on it. So the way to make a generator expression into a list is to put brackets around it.
Detailed explanation:
A generator expression is a "naked" for expression. Like so:
x*x for x in range(10)
Now, you ...
How to escape apostrophe (') in MySql?
The MySQL documentation says that it should be \' . However, both scite and mysql shows that '' works. I saw that and it works. What should I do?
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What should I do if the current ASP.NET session is null?
...ireRequestState runs before control is handed to your Page. So if you are calling other functionality, including static classes, from your page, you should be fine.
If you have some classes doing initialization logic during startup, for example on the Application_Start event or by using a static con...
Is the order of iterating through std::map known (and guaranteed by the standard)?
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Yes, that's guaranteed. Moreover, *begin() gives you the smallest and *rbegin() the largest element, as determined by the comparison operator, and two key values a and b for which the expression !compare(a,b) && !compare(b,a) is true are considered equal. The default comparis...
How can I import a database with MySQL from terminal?
...tory) to your MySQL/bin directory inside the CMD before executing the command.
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Differences between numpy.random and random.random in Python
...of much higher quality than is available from random.random alone. You usually don't need this, though.
– SingleNegationElimination
Aug 11 '11 at 18:36
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What is your most productive shortcut with Vim?
I've heard a lot about Vim , both pros and cons.
It really seems you should be (as a developer) faster with Vim than with any other editor.
I'm using Vim to do some basic stuff and I'm at best 10 times less productive with Vim.
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How do I generate random numbers in Dart?
How do I generate random numbers using Dart?
13 Answers
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