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Why is Go so slow (compared to Java)?
...fically, the goroutine scheduler isn't pre-emptive). Beyond that, I don't know Google's plans, whether the g compilers will ever be fiercely optimising, or if only gccgo will.
– Steve Jessop
Apr 24 '10 at 17:46
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How to check if a variable is a dictionary in Python?
... in try...except (AttributeError, TypeError). If exception is raised, you know ele has no items that yields an iterable...
– cowbert
Jul 14 '18 at 3:31
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Cannot import the keyfile 'blah.pfx' - error 'The keyfile may be password protected'
... key file, any other users that get latest on this checked in key file are now going to experience this bug. If any of those users check in their "fix" and I get latest, then my machine is now broken again... and so on. Microsoft have started a trouble ticket on this and assigned it to the VS2010 ...
Non-static variable cannot be referenced from a static context
... class and an instance of that class. If you see a car on the street, you know immediately that it's a car even if you can't see which model or type. This is because you compare what you see with the class "car". The class contains which is similar to all cars. Think of it as a template or an idea.
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Two-dimensional array in Swift
...[0] += [345, 678]
If you had 3x2 array of 0(zeros) before these changes, now you have:
[
[0, 0, 234, 345, 678], // 5 elements!
[123, 456, 789],
[0, 0]
]
So be aware that sub arrays are mutable and you can redefine initial array that represented matrix.
Examine size/bounds before access...
What is the difference between a 'closure' and a 'lambda'?
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Claudiu, to my uncertain knowledge python has never quite got closures correct. Did they fix the mutability problem while I wasn't looking? Quite possible...
– simon
Oct 21 '08 at 5:20
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Trust Anchor not found for Android SSL Connection
...stalling the intermediate certificates provided by my certificate issuer I now have no errors when connecting using HttpsUrlConnection.
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When is localStorage cleared?
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localStorage is also known as Web Storage, HTML5 Storage, and DOM Storage (these all mean the same thing).
localStorage is similar to sessionStorage, except that data stored in localStorage has no expiration time, while data stored in sessionStor...
What is the MySQL JDBC driver connection string?
...class.forName string is "com.mysql.jdbc.Driver", which you can find (edit: now on the same page).
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MacOSX homebrew mysql root password
...ce
launchctl unload -w ~/Library/LaunchAgents/homebrew.mxcl.mysql.plist
Now start mysql by hand skipping the grant tables and networking
$(brew --prefix mysql)/bin/mysqld_safe --skip-grant-tables --skip-networking
Note that if when you run echo $(brew --prefix mysql) and it does not respond as...