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Java Date vs Calendar
...d date-time classes such as java.util.Date, java.util.Calendar, and java.text.SimpleDateFormat are now legacy, supplanted by the java.time classes built into Java 8 and later. See Tutorial by Oracle.
– Basil Bourque
Oct 19 '18 at 19:51
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How to modify memory contents using GDB?
I know that we can use several commands to access and read memory: for example, print, p, x...
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What will happen if I modify a Python script while it's running?
... your script into a PYC file and launches that.
However, if some kind of exception occurs, you may get a slightly misleading explanation, because line X may have different code than before you started the script.
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Is it possible to disable floating headers in UITableView with UITableViewStylePlain?
...n the table view.
You just need to add some logic in your cellForRowAtIndexPath to return the right cell type when it is a header row.
You'll probably have to manage your sections yourself though, i.e. have everything in one section and fake the headers. (You could also try returning a hidden vie...
set up device for development (???????????? no permissions)
I am using a Samsung galaxy nexus phone ( Android 4.0 platform) .
26 Answers
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Laravel Schema onDelete set null
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laravel.com/docs/6.x/migrations#foreign-key-constraints it doesn't document what options there are, but I think you can assume it's the default mysql values (see ../ vendor / laravel / framework / src / Illuminate / Database / Schema / Grammars...
How to store a dataframe using Pandas
...erability, as a faster alternative to JSON, or if you have python object/text-heavy data (see this question).
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SQL SELECT speed int vs varchar
...nts take up much less space than varchars.
This holds true both for unindexed and indexed access. The fastest way to go is an indexed int column.
As I see you've tagged the question postgreql, you might be interested in the space usage of different date types:
int fields occupy between 2 and 8...
How to escape quote marks in Exec Command in MSBuild
...ed double quote marks, but MSBuild doesn't like it (either that or Windows XP doesn't like it). Anyone know how to code this beast so the map works?
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Generate array of all letters and digits
... Is there a particular name for the * operator used in this context? It's new to me.
– Michael Burr
Jan 31 '11 at 1:38
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