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When is CRC more appropriate to use than MD5/SHA1?
When is it appropriate to use CRC for error detection versus more modern hashing functions such as MD5 or SHA1? Is the former easier to implement on embedded hardware?
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How do I iterate over an NSArray?
...ss the objects by index, you can run into strange exceptions or off-by-one errors (often long after the problem has occurred) that can be horrific to debug. Enumeration using one of the standard idioms has a "fail-fast" behavior, so the problem (caused by incorrect code) will manifest itself immedia...
How can I wait till the Parallel.ForEach completes
I'm using TPL in my current project and using Parallel.Foreach to spin many threads. The Task class contains Wait() to wait till the task gets completed. Like that, how I can wait for the Parallel.ForEach to complete and then go into executing next statements?
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How to strip leading “./” in unix “find”?
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Better with 2> /dev/null to ignore error reported when the command is run in an empty directory.
– neevek
Dec 17 '16 at 6:13
add a comm...
Parsing boolean values with argparse
...ther solution using the previous suggestions, but with the "correct" parse error from argparse:
def str2bool(v):
if isinstance(v, bool):
return v
if v.lower() in ('yes', 'true', 't', 'y', '1'):
return True
elif v.lower() in ('no', 'false', 'f', 'n', '0'):
return F...
How to crop an image using PIL?
I want to crop image in the way by removing first 30 rows and last 30 rows from the given image. I have searched but did not get the exact solution. Does somebody have some suggestions?
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How can I convert string date to NSDate?
...let date = dateFormatter.date(from: /* your_date_string */) else {
fatalError("ERROR: Date conversion failed due to mismatched format.")
}
// use date constant here
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Facebook Android Generate Key Hash
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I am getting this: keytool error: java.io.IOException: Keystore was tampered with, or password was incorrect.How can i find my correct password?
– DuyguK
Feb 10 '13 at 19:11
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Overload with different return type in Java?
... new StringBuilder("Hello " + name);
}
//This will not work
//Error: Duplicate method greet() in type B
public StringBuilder greet() {
return new StringBuilder("Hello Tarzan");
}
}
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git update-index --assume-unchanged returns “fatal unable to mark file”
...t was not listed when executing ls-files -o, and I still received the same error "fatal: Unable to mark file".
I thought that perhaps it was a bug, and downloaded the latest version of git, but this did not help.
What I finally realized is that this command is case sensitive! This includes the fu...