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What is the difference between Int and Integer?
...r no
matter how big, up to the limit of
your machine's memory…. This means you never have
arithmetic overflows. On the other
hand it also means your arithmetic is
relatively slow. Lisp users may
recognise the "bignum" type here.
"Int" is the more common 32 or 64 bit
integer. Imp...
What does the smiley face “:)” mean in CSS?
... It says "add a non-alphanumeric", not "add one or more...". Or does the : mean something else? Otherwise, can't I put *********************font-size: "150%";, etc.?
– Max
Aug 23 '14 at 15:46
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Explicit vs implicit SQL joins
...table2 has about 1000 rows.
This is a very simple case; it doesn't by any means prove that the query optimizer wouldn't get confused and generate different plans in a more complicated case.
share
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Why is \r a newline for Vim?
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For me the point of confusion is that \r and \n mean different things when used is the search pattern and the replacement pattern.
– dlamblin
Dec 4 '12 at 17:09
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Use of alloc init instead of new
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@VinceO'Sullivan, good point. This means if one wants to make init unavailable, as in a singleton class, one should disable new as well. I won't touch here on whether singletons are good or bad.
– user3099609
Mar 24 '15 a...
MySQL: Large VARCHAR vs. TEXT?
...er VARCHAR or TEXT. I'm setting a front-end limit of 3000 characters which means the messages would never be inserted into the db as longer than this.
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Compare object instances for equality by their attributes
...g __eq__ will automatically make instances of your class unhashable, which means they can't be stored in sets and dicts. If you're not modelling an immutable type (i.e. if the attributes foo and bar may change value within the lifetime of your object), then it's recommend to just leave your instance...
What is the difference between partitioning and bucketing a table in Hive ?
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SORTED BY is meant to be used with DISTRIBUTED BY. For instance, you may want to distributed by user id and sort by time within the bucket. CLUSTER BY is just a shortcut for when the clause on the SORTED BY and DISTRIBUTED BY are the sam...
Get the current fragment object
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doesn't this solution means that you have to put same tag for multiple fragments? otherwise how would you know fragmentTag is the tag for the current fragment?
– Thupten
Jun 26 '13 at 19:39
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SQLite UPSERT / UPDATE OR INSERT
...esides, I created the table with the clause ON DELETE CASCADE, which would mean that it'd delete data silently. Dangerous.
So, I first thought of a IF clause, but SQLite only has CASE. And this CASE can't be used (or at least I did not manage it) to perform one UPDATE query if EXISTS(select id from ...