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Types in MySQL: BigInt(20) vs Int(20)
... will accept.
Practically, it affects only the ZEROFILL option:
CREATE TABLE foo ( bar INT(20) ZEROFILL );
INSERT INTO foo (bar) VALUES (1234);
SELECT bar from foo;
+----------------------+
| bar |
+----------------------+
| 00000000000000001234 |
+----------------------+
It'...
Generating v5 UUID. What is name and namespace?
...ds to be "very secure"). That said, it gives you a way of creating a repeatable/verifiable "hash" function mapping a possibly hierarchical name onto a probabilistically unique 128-bit value, potentially acting like a hierarchical hash or MAC.
Suppose you have a (key,value) store, but it only suppo...
What's HTML character code 8203?
...g you don't know how to target. (i tried working with get_html_translation_table(HTML_ENTITIES) and ord() but still couldn't win) this finally gave me the handle i needed to move forward! THANK YOU!!!
– aequalsb
Feb 17 '17 at 22:26
...
Can I concatenate multiple MySQL rows into one field?
...ead of a group—and concatenate on a certain field.
Let's say you have a table of product ids and their names and prices:
+------------+--------------------+-------+
| product_id | name | price |
+------------+--------------------+-------+
| 13 | Double Double | 5 |...
Why Doesn't C# Allow Static Methods to Implement an Interface?
...designed to look at the statuc members as well? Don't the instances have a table of addresses for the implementation of theis methods? Couldn't the static methods be included in this table?
– Kramii
Nov 3 '08 at 16:03
...
HashMap and int as key
...putForNullKey(value);
int hash = hash(key);
int i = indexFor(hash, table.length);
for (Entry<K,V> e = table[i]; e != null; e = e.next) {
Object k;
if (e.hash == hash && ((k = e.key) == key || key.equals(k))) {
V oldValue = e.value;
e....
get client time zone from browser [duplicate]
...tring, but not the offset. Learn more at the MDN reference.
Compatibility table - as of March 2019, works for 90% of the browsers in use globally. Doesn't work on Internet Explorer.
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When does a process get SIGABRT (signal 6)?
...sses inside pointer to itself.
the A ctor calls pure virtual method before table was filled with valid pointer,
because d is not constructed yet.
#include<iostream>
using namespace std;
class A {
public:
A(A *pa){pa->f();}
virtual void f()=0;
};
class D : public A {
public:
D():A(this)...
Is there more to an interface than having the correct methods
...Another common use of interfaces is for Callbacks. For example, java.swing.table.TableCellRenderer, which allows you to influence how a Swing table displays the data in a certain column. You implement that interface, pass an instance to the JTable, and at some point during the rendering of the table...
Why is f(i = -1, i = -1) undefined behavior?
... Usually the compiler will do indirect addressing to fetch a number form a table to avoid this. (-1 can be done in 1 instruction, but another example could be chosen).
– ctrl-alt-delor
Feb 11 '14 at 12:26
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