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Do sealed classes really offer performance Benefits?
... on the topic.
Note that any kind of performance benefit you would obtain from this level of optimization should be regarded as last-resort, always optimize on the algorithmic level before you optimize on the code-level.
Here's one link mentioning this: Rambling on the sealed keyword
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Why are global variables evil? [closed]
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@CorleyBrigman: singleton classes actually often suffer from the same problems typically attributed to globals :)
– Erik Kaplun
Oct 3 '13 at 13:40
4
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ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock'
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Run: brew info mysql
And follow the instructions. From the description in the formula:
Set up databases to run AS YOUR USER ACCOUNT with:
unset TMPDIR
mysql_install_db --verbose --user=`whoami` --basedir="$(brew --prefix mysql)" --datadir=/usr/local/var/mysql --tmpd...
Coding Style Guide for node.js apps? [closed]
...codebase
I'll throw mine in there for good measure ;)
Edit: Suggestions from @alienhard
Google JavaScript style Guide
Felix's Node.js Style Guide
IMO there's a few golden rules you should follow:
Never use with or eval
Use === over ==
Always declare your variables with var in the appropriat...
What does enumerable mean?
...ondition is in place because objects have many more properties, especially from inheritance:
console.log(Object.getOwnPropertyNames(Object.prototype));
// ["constructor", "toString", "toLocaleString", "valueOf", "hasOwnProperty", "isPrototypeOf", "propertyIsEnumerable", /* etc. */]
Each of these ...
Where do the Python unit tests go?
...ule.py
test_module_function.py
# test_module.py
import unittest
from lib import module
class TestModule(unittest.TestCase):
def test_module(self):
pass
if __name__ == '__main__':
unittest.main()
Run the test in CLI
# In top-level /module/ folder
python -m tests.test_m...
How to pass parameters to the DbContext.Database.ExecuteSqlCommand method?
...but this mechanism allows for SQL injection and also prevents the database from reusing an execution plan when the statement shows up again but with different values.
– Greg Biles
Nov 4 '11 at 16:52
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Can you determine if Chrome is in incognito mode via a script?
... updated with this, or the accepted answer should change. Not to take away from the originally accepted answer as it was the correct solution at the time.
– Cruncher
Aug 12 '19 at 15:13
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Removing index column in pandas when reading a csv
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When reading to and from your CSV file include the argument index=False so for example:
df.to_csv(filename, index=False)
and to read from the csv
df.read_csv(filename, index=False)
This should prevent the issue so you don't need to fix ...
How to save a dictionary to a file?
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@Gulzar from what I looked up, np.load returns an ndarray (doing a type(read_dictionary) reveals so) and .item() basically converts that element to a python scalar object which is a dictionary as stated here
– a...