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indexOf method in an object array?
...tioned in my answer. Even though the findIndex method browser support is a bit poor, it seems like it would be doing the same thing, but still ends up less performant? See the link in my answer for benchmarks.
– Uniphonic
Jun 27 '17 at 22:32
...
How to check if any flags of a flag combination are set?
... public enum Pet {
None = 0,
Dog = 1,
Cat = 2,
Bird = 4,
Rabbit = 8,
Other = 16
}
public class Example
{
public static void Main()
{
// Define three families: one without pets, one with dog + cat and one with a dog only
Pet[] petsInFamilies = { Pet.None, Pet.Dog ...
创建增量同步Oracle物化视图问题 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...境。
数据库A和数据库B的版本为Oracle 10.2.0.4 for linux x86 64bit。
在数据库A上同步的表的结构如下：
create table T_MV_TEST
(
A DATE,
B DATE,
C DATE
);
alter table T_MV_TEST
add constraint PK_T_MV_TEST primary key (A,B);
这是一个测试表，很...
Read file data without saving it in Flask
...e: file = request.files.get('file') filetype = magic.from_buffer(file.read(1024))
– endolith
Dec 26 '14 at 20:00
7
...
Google Authenticator implementation in Python
... & 15
h = (struct.unpack(">I", h[o:o+4])[0] & 0x7fffffff) % 1000000
return h
def get_totp_token(secret):
return get_hotp_token(secret, intervals_no=int(time.time())//30)
It has two functions:
get_hotp_token() generates one-time token (that should invalidate after single u...
How can I pass arguments to a batch file?
...
It's not a bug because %* never worked in MS-DOS or Win9x in the first place.
– Kef Schecter
Nov 23 '11 at 4:54
...
Run an OLS regression with Pandas Data Frame
...import statsmodels.formula.api as sm
>>> df = pd.DataFrame({"A": [10,20,30,40,50], "B": [20, 30, 10, 40, 50], "C": [32, 234, 23, 23, 42523]})
>>> result = sm.ols(formula="A ~ B + C", data=df).fit()
>>> print(result.params)
Intercept 14.952480
B 0.401182
C ...
Bash empty array expansion with `set -u`
... |
edited May 2 at 10:40
answered Apr 3 '13 at 6:08
...
Returning the product of a list
...3 int is Python 2 long. Python 2 will be using "int" until it overflows 32 bits; Python 3 will use "long" from the start. (2) Python 3.0 was a "proof of concept". Upgrade to 3.1 ASAP!
– John Machin
Jan 20 '10 at 22:30
...
lenses, fclabels, data-accessor - which library for structure access and mutation is better
... putting twice is the same as putting once, or rather, that the second put wins.
put l b1 (put l b2 a) = put l b1 a
Note, that the type system isn't sufficient to check these laws for you, so you need to ensure them yourself no matter what lens implementation you use.
Many of these libraries als...