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What does immutable mean?
...dited Feb 28 '15 at 2:23
Samar Panda
3,49633 gold badges2121 silver badges3131 bronze badges
answered Jul 8 '10 at 1:57
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How do I iterate through the alphabet?
... addition to string.ascii_lowercase you should also take a look at the ord and chr built-ins. ord('a') will give you the ascii value for 'a' and chr(ord('a')) will give you back the string 'a'.
Using these you can increment and decrement through character codes and convert back and forth easily eno...
Failure [INSTALL_FAILED_ALREADY_EXISTS] when I tried to update my application
...me here because I wanted to know whether adb install -r would remove first and then install or upgrade my app. Although adb's description is not very clear (-r: replace existing application), adb install -r does indeed upgrade your app and does not remove your app data. Therefore suitable to test up...
How to parse float with two decimal places in javascript?
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glad to help and keep up the good work on -- "learning a new thing every day"
– Mahesh Velaga
Dec 14 '10 at 1:55
3
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Android: how do I check if activity is running?
...the same class running? What if you extend MyActivity with MyChildactivity and want to check if the child is active?
– Mister Smith
Sep 2 '13 at 10:27
2
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Python module for converting PDF to text [closed]
...n Activestate which uses pypdf but the text generated had no space between and was of no use.
13 Answers
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What is the canonical way to trim a string in Ruby without creating a new string?
...e.strip!
The #strip! method will return nil if it didn't strip anything, and the variable itself if it was stripped.
According to Ruby standards, a method suffixed with an exclamation mark changes the variable in place.
Hope this helps.
Update: This is output from irb to demonstrate:
>> ...
Can I change the viewport meta tag in mobile safari on the fly?
....0, maximum-scale=1.0, user-scalable=0');
Just change the parts you need and Mobile Safari will respect the new settings.
Update:
If you don't already have the meta viewport tag in the source, you can append it directly with something like this:
var metaTag=document.createElement('meta');
metaT...
What exactly does the Access-Control-Allow-Credentials header do?
I'm trying to understand how to use CORS and am confused about what the Access-Control-Allow-Credentials header does.
1 A...
Reading a resource file from within jar
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Thank you, this was very helpful and the code works perfectly, but I do have one problem, I need to determine whether the InputStream exists (like File.exists()) so my game can tell whether to use the default file or not. Thanks.
– Prin...