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Check if a given key already exists in a dictionary
...ionary is a hashtable of keys mapped to values, right? A hashing algorithm converts the key to an integer and the integer is used to find a location in the hash table that matches. en.wikipedia.org/wiki/Hash_table
– hughdbrown
Oct 22 '09 at 2:31
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Return 0 if field is null in MySQL
...ed Nov 11 '16 at 6:43
Krishna_K_SystematixKrishna_K_Systematix
25044 silver badges1010 bronze badges
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Difference between exit(0) and exit(1) in Python
...added by the site module, and should not be used by programs. Instead, use sys.exit(), or even raise SystemExit, if you don't want to import another module.
– daviewales
Aug 22 '19 at 5:00
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How to get a path to a resource in a Java JAR file
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When I try and convert a URL of this format (...bot.jar!/config/...) to URI it says that the path is not hierarchical.
– gEdringer
Jun 6 '18 at 10:12
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How do I convert an array object to a string in PowerShell?
How can I convert an array object to string?
6 Answers
6
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How to convert CFStringRef to NSString?
How can I get a new NSString from aCFString ?
8 Answers
8
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How to log cron jobs?
...he cron job to /var/log/myjob.log
You might use mail to send emails. Most systems will send unhandled cron job output by email to root or the corresponding user.
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How to remove convexity defects in a Sudoku square?
...by dividing each pixel with the result of a closing operation:
src = ColorConvert[Import["http://davemark.com/images/sudoku.jpg"], "Grayscale"];
white = Closing[src, DiskMatrix[5]];
srcAdjusted = Image[ImageData[src]/ImageData[white]]
The next step is to find the sudoku area, so I can ignore (m...
Android. WebView and loadData
... strange signs instead of ü, ö, ä. But I have another idea, I'll try to convert byte stream from server into string using right encoding. maybe, that'll help me
– Tima
Dec 7 '10 at 10:14
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How can I check file size in Python?
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import os
def convert_bytes(num):
"""
this function will convert bytes to MB.... GB... etc
"""
for x in ['bytes', 'KB', 'MB', 'GB', 'TB']:
if num < 1024.0:
return "%3.1f %s" % (num, x)
num /= ...