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Why do x86-64 systems have only a 48 bit virtual address space?
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Where does the 4 come from in the 4 petabytes? If we're talking 64 address lines we should end up with the square of the address space made possible by 32 address lines which is 4 gigabytes. Square that and we should have 16, not 4 petabytes. Am I...
Using vagrant to run virtual machines with desktop environment
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I just got this working with basically three steps. The advice from askubuntu.com didn't quite work for me, so try this simplified version:
Get a basic Ubuntu image working. You should be able to boot it and vagrant ssh.
Next, enable the VirtualBox display, which is off by default. Hal...
Get JSF managed bean by name in any Servlet related class
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@Marc: Has been in from the beginning. Was just a leftover from a copypaste mistake I guess. Answer has been corrected. Thank you for notifying.
– BalusC
Oct 8 '14 at 19:48
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Formatting Phone Numbers in PHP
...g on an SMS app and need to be able to convert the sender's phone number from +11234567890 to 123-456-7890 so it can be compared to records in a MySQL database .
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String formatting named parameters?
...rint('<a href="{0}">{0}</a>'.format(my_url))
which saves you from repeating the argument, or
print('<a href="{url}">{url}</a>'.format(url=my_url))
if you want named parameters.
print('<a href="{}">{}</a>'.format(my_url, my_url))
which is strictly positiona...
Meaning of = delete after function declaration
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@Reb, =delete makes the method inaccessible even from contexts that can see private methods (i.e. within the class and its friends). This removes any uncertainty when you're reading the code. @Prasoon, that second example is still only deleting constructors - it would be ...
Android: How to create a Dialog without a title?
...m dialogs.
In very short summary, you do this with code like copied below from the official website. That takes a custom layot file, inflates it, gives it some basic text and icon, then creates it. You'd show it then with alertDialog.show().
AlertDialog.Builder builder;
AlertDialog alertDialog;
C...
Checking if an object is a given type in Swift
...ld only use as without the ? if there is no way your program could recover from the object not being of that type because the program will immediately halt if it is not. Using the ? in the if statement allows the program to continue.
– drewag
Jun 6 '14 at 23:55...
How do I copy a file in Python?
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shutil has many methods you can use. One of which is:
from shutil import copyfile
copyfile(src, dst)
Copy the contents of the file named src to a file named dst.
The destination location must be writable; otherwise, an IOError exception will be raised.
If dst already exists, ...
NSUserDefaults not cleared after app uninstall on simulator
... as well.
However, NSUserDefaults are NOT deleted when you remove an app from the simulator.
They are correctly deleted when you delete them from a physical device running iOS8.
A quick and annoying solution for now is to click, iOS Simulator -> Reset Content and Settings.
Xcode 9.2 with Sim...