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What Regex would capture everything from ' mark to the end of a line?
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This will capture first instance of character ' and end of last line
– killdaclick
Jun 10 '19 at 20:00
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Difference between viewDidLoad and viewDidAppear
What is the difference between viewDidLoad and viewDidAppear ? What kind of initialization or custom code goes into those functions?
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How can I make the Android emulator show the soft keyboard?
...rd display not displaying when it should. However, I don't have a device handy for testing. The problem is that the emulator never shows the soft keyboard .
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SQLAlchemy: cascade delete
...ession.query().filter().delete() (which doesn't put elements in the memory and deletes directly from db).
Using this method sqlalchemy's cascade='all, delete' doesn't work. There is a solution though: ON DELETE CASCADE through db (note: not all databases support it).
class Child(Base):
__table...
Add list to set?
... hashable objects. The objects have to be hashable so that finding, adding and removing elements can be done faster than looking at each individual element every time you perform these operations. The specific algorithms used are explained in the Wikipedia article. Pythons hashing algorithms are exp...
How do I Search/Find and Replace in a standard string?
...one can do better, but this solution has the merit of being easy to understand.
– Zonko
Sep 21 '11 at 8:57
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How to join (merge) data frames (inner, outer, left, right)
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By using the merge function and its optional parameters:
Inner join: merge(df1, df2) will work for these examples because R automatically joins the frames by common variable names, but you would most likely want to specify merge(df1, df2, by = "Custome...
How to find current transaction level?
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just run DBCC useroptions and you'll get something like this:
Set Option Value
--------------------------- --------------
textsize 2147483647
language us_english
dateformat mdy
d...
How to print matched regex pattern using awk?
... homework to get the for-loop to work if (a) "yyy" is a regular expression and not a straight string and (b) if that "yyy" does not match an entire field within a record.
– Johnsyweb
Apr 4 '11 at 9:28
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List comprehension vs. lambda + filter
I happened to find myself having a basic filtering need: I have a list and I have to filter it by an attribute of the items.
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