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PostgreSQL: Can you create an index in the CREATE TABLE definition?
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There doesn't seem to be any way of specifying an index in the CREATE TABLE syntax. PostgreSQL does however create an index for unique constraints and primary keys by default, as described in this note:
PostgreSQL automatically creates an index for each unique ...
Python Requests library redirect new url
...URL, which can be found in response.url.
response = requests.get(someurl)
if response.history:
print("Request was redirected")
for resp in response.history:
print(resp.status_code, resp.url)
print("Final destination:")
print(response.status_code, response.url)
else:
prin...
Find and replace string values in list
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What if one of the items is a float/integer?
– Patriots299
Dec 31 '18 at 20:38
add a comment
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Where is nodejs log file?
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If you use docker in your dev you can do this in another shell:
docker attach running_node_app_container_name
That will show you STDOUT and STDERR.
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Crontab Day of the Week syntax
... Sunday)
↓ ↓ ↓ ↓ ↓
* * * * * command to be executed
Finally, if you want to specify day by day, you can separate days with commas, for example SUN,MON,THU will exectute the command only on sundays, mondays on thursdays.
You can read further details in Wikipedia's article about Cron.
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Can a program depend on a library during compilation but not runtime?
I understand the difference between runtime and compile-time and how to differentiate between the two, but I just don't see the need to make a distinction between compile-time and runtime dependencies .
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Piping both stdout and stderr in bash?
It seems that newer versions of bash have the &> operator, which (if I understand correctly), redirects both stdout and stderr to a file ( &>> appends to the file instead, as Adrian clarified).
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How to pass an ArrayList to a varargs method parameter?
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This will not work without a warning if there are further templates involved. E.g. someMethod(someList.toArray(new ArrayList<Something>[someList.size()])) will give you a warning that is very annoying if the function is more than a few lines long (because ...
Why is the C++ STL is so heavily based on templates? (and not on *interfaces*)
...n't a pretty sight.
Try drawing a dependency graph of a hypothetical "OOP-ified" STL. How many classes would have to know about each others? There would be a lot of dependencies. Would you be able to include just the vector header, without also getting iterator or even iostream pulled in? The STL m...
How do I convert from BLOB to TEXT in MySQL?
...'t work. The charset needs to be utf16 or else it will result in data loss if it encounters a set of bytes that can't be converted to utf8. It will replace those bytes with a ? character resulting in data loss.
– Dean Or
Aug 12 '19 at 20:21
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