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How to check if the string is empty?
...ould also enter the if not myString: block if myString were None, 0, False etc. So if you aren't sure what type myString is, you should use if myString == "": to determine if it is an empty string as opposed to some other falsy value.
– Andrew Clark
Aug 7 '13 ...
simple HTTP server in Java using only Java SE API
...uch as GlassFish (Java EE impl), Mojarra (JSF impl), Jersey (JAX-RS impl), etc.
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Python __call__ special method practical example
... some default built-in validators such as email validators, url validators etc., which broadly fall under the umbrella of RegEx validators. To implement these cleanly, Django resorts to callable classes (instead of functions). It implements default Regex Validation logic in a RegexValidator and then...
Header files for x86 SIMD intrinsics
...nt in all clang-3.x releases. gcc-7 is in pre-release (regression testing, etc.) and following the current versioning scheme, will be released as gcc-7.1.0.
clang : x86intrin.h appears to have been supported for all clang-3.x releases. The latest stable release is clang (LLVM) 3.9.1. The developmen...
How to make rpm auto install dependencies
...od -R o-w+r /home/user/repo
Create a repository configuration file, e.g. /etc/yum.repos.d/myrepo.repo containing
[local]
name=My Awesome Repo
baseurl=file:///home/user/repo
enabled=1
gpgcheck=0
Install your package using
# yum install packagename
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Where should signal handlers live in a django project?
... To John Mee's point, it's not much different than just overriding save(), etc.
– Matt
May 23 '14 at 17:28
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What is the common header format of Python files?
...that __credits__ includes people who reported bug fixes, made suggestions, etc. but did not actually write the code.
Here you have more information, listing __author__, __authors__, __contact__, __copyright__, __license__, __deprecated__, __date__ and __version__ as recognized metadata.
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What is the most efficient way to store a list in the Django models?
...6)
student_number = models.CharField(max_length=128)
# other fields, etc...
friends = models.ManyToManyField('self')
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Database, Table and Column Naming Conventions? [closed]
...ut people or multiple persons is called People, PersonCollection, Persons, etc.
– Triynko
Apr 23 '10 at 16:15
5
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Regex, every non-alphanumeric character except white space or colon
... which are typically not supported by older tools like grep, sed, tr, lex, etc.
– tripleee
Dec 6 '19 at 8:26
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