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What is the Swift equivalent of respondsToSelector?
...is inherently a safe language so everytime you call a method Swift has to know the method is there. No runtime checking is possible. You can't just call random methods on random objects.
Even in Obj-C you should avoid such things when possible because it doesn't play well with ARC (ARC then trigger...
Fixed size queue which automatically dequeues old values upon new enques
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@RichardSchneider If you need to handle concurrency issues yourself then it would be a good idea to swap the ConcurrentQueue<T> object for a Queue<T> object which is more lightweight.
– 0b101010
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How to validate an email address using a regular expression?
...me web page as was the address.
Confirmation tokens are the only way to know you got the address of the person entering it. This is why most mailing lists now use that mechanism to confirm sign-ups. After all, anybody can put down president@whitehouse.gov, and that will even parse as legal, but it...
Android XML Percent Symbol
... Packaging Tool (aapt) has become very strict in its latest release and is now used for all Android versions. The aapt-error you're getting is generated because it no longer allows non-positional format specifiers.
Here are a few ideas how you can include the %-symbol in your resource strings.
If ...
Most efficient way to remove special characters from string
...StringBuilder sb = new StringBuilder();
foreach (char c in str) {
if ((c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') || c == '.' || c == '_') {
sb.Append(c);
}
}
return sb.ToString();
}
One thing th...
Linux command or script counting duplicated lines in a text file?
If I have a text file with the following conent
8 Answers
8
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How to use phpexcel to read data and insert into database?
...ata from excel, Insert into database and then generate pdf reports for specific users.
I searched a lot but nothing specific given about both things.
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multiprocessing: sharing a large read-only object between processes?
...My processes aren't really fitlers; they're all the same, just processing different pieces of data.
– Parand
Mar 18 '09 at 20:20
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What is the Sign Off feature in Git for?
...eated the patch in question, or that you certify that to the best of your knowledge, it was created under an appropriate open-source license, or that it has been provided to you by someone else under those terms. This can help establish a chain of people who take responsibility for the copyright sta...
Python ElementTree module: How to ignore the namespace of XML files to locate matching element when
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Instead of modifying the XML document itself, it's best to parse it and then modify the tags in the result. This way you can handle multiple namespaces and namespace aliases:
from io import StringIO # for Python 2 import from StringIO in...