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memory_get_peak_usage() with “real usage”
...able or specific section of PHP is:
$start_memory = memory_get_usage();
$foo = "Some variable";
echo memory_get_usage() - $start_memory;
See Explanation, but if you are in a loop or recursive function you can use maximum memory usage to estimate safely when memory peek would be reached.
Example...
How to create a unique index on a NULL column?
...
for reference in 2008 on you can do CREATE UNIQUE INDEX foo ON dbo.bar(key) WHERE key IS NOT NULL;
– niico
May 3 '17 at 16:06
2
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JavaScript: Class.method vs. Class.prototype.method
...y class property resolves to b.__proto__.constructor and thereby points to Foo.
– Bob Stein
Jul 9 at 17:07
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show 2 more comments
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Python - Create a list with initial capacity
...d avoid the list by using a generator instead:
def my_things():
while foo:
#baz
yield bar
#qux
for thing in my_things():
# do something with thing
This way, the list isn't every stored all in memory at all, merely generated as needed.
...
What's wrong with nullable columns in composite primary keys?
...kages have a customized extension that is usually not an integer (like "rc-foo" or "vanilla" or "beta" or whatever else someone for whom four fields is insufficient might dream up). If a package does not have an extension, then it is NULL in the above model, and no harm would be done by leaving thin...
How to get a reference to current module's attributes in Python
...e added for example, via hooking or by the 3dparty tools like pytest:
*** foo ... ..
*** boo ... ..
*** runtest c:\python\x86\37\lib\site-packages\xonsh\pytest_plugin.py 58
*** pytest_runtest_call c:\python\x86\37\lib\site-packages\_pytest\runner.py 125
*** _multicall c:\python\x86\37\lib\site-pack...
What are the differences between a pointer variable and a reference variable in C++?
...lass
{
...
virtual void DoSomething(int,int,int,int,int);
};
void Foo(const My
How can bcrypt have built-in salts?
...
OK, so I sign up for a site and choose a the password "foo". Bcrypt adds a random salt of "akd2!*", resulting in "fooakd2!*", which is hashed and stored. Later, I try to sign in with password "bar". To see if I'm correct, it needs to hash "barakd2!*". If the salt was generated ra...
Checkout subdirectories in Git?
... And is there a way to rename those folders? If I sparse checkout /foo/bar/foobar, is it possible to see it only as /foobar in my local repository?
– graywolf
Aug 5 '18 at 11:11
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SPAN vs DIV (inline-block)
...an't put block elements inside inline elements so:
<p>...<div>foo</div>...</p>
is not strictly valid even if you change the <div> to inline or inline-block.
So, if your element is inline or inline-block use a <span>. If it's a block level element, use a <di...