大约有 19,300 项符合查询结果（耗时：0.0398秒） [XML]
How do I write a short literal in C++?
...ong long value)
{
return static_cast<std::uint16_t>(value);
}
void func(std::uint32_t value); // 1
void func(std::uint16_t value); // 2
func(0x1234U); // calls 1
func(0x1234_u); // calls 2
// also
inline std::int16_t operator "" _s(unsigned long long value)
{
return static_cast<s...
What is the difference between BIT and TINYINT in MySQL?
...
To avoid confusion it should be added that TINYINT and BIT(1) do not differ in their Storage Requirements and that BOOL and BOOLEAN are synonyms for TINYINT(1) Numeric Type Overview.
– Timo Strotmann
...
How do I create a namespace package in Python?
... @clacke It doesn't work that way (but it has the same effect as if it did). It maintains a global list of all package namespaces created with that function, and watches sys.path. When sys.path changes it checks if that affects the __path__ of any namespace, and if it does then it updates those _...
Diff output from two programs without temporary files
...
The OP did tag the question bash, but for the record, this doesn't work in any other shell. It's a bash extension to the Posix utility standard.
– DigitalRoss
Sep 27 '10 at 0:46
...
What is the difference between persist() and merge() in JPA and Hibernate?
...X is copied onto a pre-existing
managed entity instance X' of the same
identity or a new managed copy X' of X
is created.
If X is a new entity
instance, a new managed entity
instance X' is created and the state
of X is copied into the new managed
entity instance X'.
If X is a
rem...
In Intellij, how do I toggle between camel case and underscore spaced?
At my company we have two different style guides for java vs sql. In java I have a field named historyOfPresentIllness and when i write the sql, I want to name it history_of_present_illness . Is there a keyboard shortcut to switch from one to the other when I have the phrase highlighted? Or pe...
JavaScript regex multiline flag doesn't work
...is highly recommended to use the *? quantifier instead of * in order to avoid greediness. This will avoid catching the last <h1> of the document: that's probably not what you want and that's not efficient as the regexp will continue to look for <h1> until the end of the string even if it...
What is the difference between '>' and a space in CSS selectors?
...there are no other elements inbetween).
A B will select any B that are inside A, even if there are other elements between them.
share
|
improve this answer
|
follow
...
Create list of single item repeated N times
...rst glance it seems that repeat is the fastest way to create a list with n identical elements:
>>> timeit.timeit('itertools.repeat(0, 10)', 'import itertools', number = 1000000)
0.37095273281943264
>>> timeit.timeit('[0] * 10', 'import itertools', number = 1000000)
0.5577236771712...
Django-DB-Migrations: cannot ALTER TABLE because it has pending trigger events
...
@mgojohn How do you do that?
– pyramidface
Jul 28 '15 at 23:42
1
@pyramidface ...