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How long should SQL email fields be? [duplicate]
...need worry about these long Email addresses? If someone can't login with a 100-char Email, do you really care? We actually prefer they can't.
Some statistical data may shed some light on the issue. We analyzed a database with over 10 million Email addresses. These addresses are not confirmed so the...
str performance in python
...
'%s' % 100000 is evaluated by the compiler and is equivalent to a constant at run-time.
>>> import dis
>>> dis.dis(lambda: str(100000))
8 0 LOAD_GLOBAL 0 (str)
3 LOAD_CONST ...
C dynamically growing array
...
int i;
initArray(&a, 5); // initially 5 elements
for (i = 0; i < 100; i++)
insertArray(&a, i); // automatically resizes as necessary
printf("%d\n", a.array[9]); // print 10th element
printf("%d\n", a.used); // print number of elements
freeArray(&a);
...
LEN function not including trailing spaces in SQL Server
... Starting from SQL server 2012, unicode columns with version 100 collations now supports surrogate pairs. This means a single character may use up to 4 bytes, causing the divide by two trick to fail. See msdn.
– Frédéric
May 26 '15 at 15:25
...
Simple Vim commands you wish you'd known earlier [closed]
... The following command would playback the macro assigned to the key `w' 100
times: 100@w
** - Vim uses words that exist in your current buffer and any other buffer you may have open for auto-complete suggestions.
s...
How to find the key of the largest value hash?
...sh.sort{|a,b| a[1] <=> b[1]}.last
puts key
end
hash = { "n" => 100, "m" => 100, "y" => 300, "d" => 200, "a" => 0 }
largest_hash_key(hash)
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TypeScript: problems with type system
...vasElementById('mycanvas'))
ctx.fillStyle = "#00FF00";
ctx.fillRect(0, 0, 100, 100);
See TypeScript Playground.
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What are the most common SQL anti-patterns? [closed]
... else "Logged out"
end as "User signed in?",
Convert(varchar(100), LastSignOn, 101) as "Last Sign On",
DateDiff('d', LastSignOn, getDate()) as "Days since last sign on",
AddrLine1 + ' ' + AddrLine2 + ' ' + AddrLine3 + ' ' +
City + ', ' + State + ' ' + Zip as "Address",
...
Where is C not a subset of C++? [closed]
...imensions of parameters
// ill-formed: invalid syntax
void f(int p[static 100]) { }
No variable length arrays
// ill-formed: n is not a constant expression
int n = 1;
int an[n];
No flexible array member
// ill-formed: fam has incomplete type
struct A { int a; int fam[]; };
No restrict qual...
Any way to properly pretty-print ordered dictionaries?
...", [500, 500]),
("position", [100, 900])])),
("splash_enabled", True),
("theme", "Dark")])),
("updates",
OrderedDict([("automatic", True),
...