大约有 23,000 项符合查询结果（耗时：0.0478秒） [XML]
Inverse dictionary lookup in Python
...#####################
class _DDChecker(type):
def __new__(cls, name, bases, classdict):
for key, value in classdict.items():
if key not in {'__new__', '__slots__', '_DoubleDict__dict_view'}:
classdict[key] = cls._wrap(value)
return super().__new__(cl...
How to force R to use a specified factor level as reference in a regression?
...d the relevel command which is the best solution if you want to change the base level for all analyses on your data (or are willing to live with changing the data).
If you don't want to change the data (this is a one time change, but in the future you want the default behavior again), then you can ...
Generate random password string with requirements in javascript
...m number, eg: 0.123456
.toString(36) // Convert to base-36 : "0.4fzyo82mvyr"
.slice(-8);// Cut off last 8 characters : "yo82mvyr"
Documentation for the Number.prototype.toString and string.prototype.slice methods.
...
How to calculate age (in years) based on Date of Birth and getDate()
...ultiplying by 100? This works for me as I'm trying to replicate in the database what exists in our code library - but I couldn't explain your function. This might be a stupid question :)
– Jen
Sep 25 '13 at 5:30
...
return query based on date
I have a data like this in mongodb
7 Answers
7
...
How to Create Deterministic Guids
...
As mentioned by @bacar, RFC 4122 §4.3 defines a way to create a name-based UUID. The advantage of doing this (over just using a MD5 hash) is that these are guaranteed not to collide with non-named-based UUIDs, and have a very (very) small possibility of collision with other name-based UUIDs.
...
Relative imports in Python 3
...y name. [...] When it [the attribute] is present, relative imports will be based on this attribute
rather than the module __name__ attribute. [...] When the main module is specified by its filename, then the __package__ attribute will be set to None. [...] When the import system encounters an expl...
Best branching strategy when doing continuous integration?
... these models facilitate Continuous Integration (CI). In my opinion, Trunk Based Development is a significant improvement on these models.
– Yani
Mar 22 '19 at 3:35
...
try/catch versus throws Exception
... be handled using try-catch.
Consider this code snippet.
There is a simple base class
package trycatchvsthrows;
public class Base {
public void show()
{
System.out.println("hello from base");
}
}
and it's derived class:
package trycatchvsthrows;
public class Derived extends...
performSelector may cause a leak because its selector is unknown
...uments these methods as "inherently unsafe"
The idea of sending messages based on a named selector is not, however, an "inherently unsafe" feature. This idea has been used successfully for a long time in Objective-C as well as many other programming languages.
1 All Objective-C methods have two...