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git revert back to certain commit [duplicate]
...o commit your latest changes to remote branch, you will most likely get an error indicating that 'Your branch is behind origin'. When that happens, you need to force the push using an f tag 'git push -f'
– JavaGeek
Oct 24 '19 at 11:03
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Getting rid of \n when using .readlines() [duplicate]
...unction to get rid of newline character as split lines was throwing memory errors on 4 gb File.
Sample Code:
with open('C:\\aapl.csv','r') as apple:
for apps in apple.readlines():
print(apps.strip())
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WHERE vs HAVING
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Here's the difference:
SELECT `value` v FROM `table` WHERE `v`>5;
Error #1054 - Unknown column 'v' in 'where clause'
SELECT `value` v FROM `table` HAVING `v`>5; -- Get 5 rows
WHERE clause allows a condition to use any table column, but it cannot use aliases or aggregate functions.
HAV...
Understanding the meaning of the term and the concept - RAII (Resource Acquisition is Initialization
...ata(FileHandle("C:\\source"), FileHandle("C:\\dest"));
}
There are three error cases to handled: no file can be opened, only one file can be opened, both files can be opened but copying the files failed. In a non-RAII implementation, Foo would have to handle all three cases explicitly.
RAII rel...
How do I analyze a .hprof file?
...duction server running with the following flag: - XX:+HeapDumpOnOutOfMemoryError
7 Answers
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Converting Dictionary to List? [duplicate]
...ied to access the list resulting from dictlist=dict.items(), I then got an error trying to access it like a list: dictlist[i][1]. Python3 doc says: ~~~~ "The objects returned by dict.keys(), dict.values() and dict.items() are view objects. They provide a dynamic view on the dictionary’s entries, ...
System.IO.Packaging
...using System.IO.Packaging directive to the top of your .cs file without an error appearing.
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mysql update column with value from another table
... is feasible also if you're using safe updates mode (and you're getting an error indicating that you've tried to update a table without a WHERE that uses a KEY column), by adding:
UPDATE TableB
SET TableB.value = (
SELECT TableA.value
FROM TableA
WHERE TableA.name = TableB.name
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Can someone explain __all__ in Python?
...oo:
$ cat > run.py
from main import *
foo()
bar()
main() # expected to error here, not exported
$ python run.py
Traceback (most recent call last):
File "run.py", line 4, in <module>
main() # expected to error here, not exported
NameError: name 'main' is not defined
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UILabel with text of two different colors
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I got error 'Use of unresolved identifier 'NSForegroundColorAttributeName' with Swift4.1, but I replace 'NSForegroundColorAttributeName' to 'NSAttributedStringKey.foregroundColor' and building correctly.
– kj1...