大约有 3,516 项符合查询结果（耗时：0.0197秒） [XML]
What is the difference between char * const and const char *?
...rs its (future) use as an expression: *(*foo)[i] (with i an integer in the range [0, 10) i.e. [0, 9]) will first dereference foo to get at the array, then access the element at index i (because postfix [] binds tighter than prefix *), then dereference this element, finally yielding an int (see ideon...
How do I set/unset a cookie with jQuery?
... is not going to work in Safari or IE for any characters outside the ASCII range, such as é, 北, etc. Also, this is not going to work for some special characters that are not allowed in the cookie-name or cookie-value. I recommend the following reference: tools.ietf.org/html/rfc6265
...
How to convert an integer to a string in any base?
...the explicit position (or name) is required.
– ShadowRanger
Apr 4 '17 at 20:09
...
#1071 - Specified key was too long; max key length is 1000 bytes
...about MySQL. The numeric argument has no effect related to storage or the range of values allowed for the column. INT is always 4 bytes, and it always allows values from -2147483648 to 2147483647. The numeric argument is about padding values during display, which has no effect unless you use the ...
Skipping Iterations in Python
...
Example for Continue:
number = 0
for number in range(10):
number = number + 1
if number == 5:
continue # continue here
print('Number is ' + str(number))
print('Out of loop')
Output:
Number is 1
Number is 2
Number is 3
Number is 4
Number is 6 # Note...
C++ mark as deprecated
...e that you at some point need a section of preprocessed alternatives for a range of platforms. #ifdef this #ifdef that and so on.
In such a section you could very well conditionally define a way to deprecate symbols. My preference is usually to define a "warning" macro since most toolchains suppor...
Practical example where Tuple can be used in .Net 4.0?
...of one:
// sum and sum of squares at the same time
var x =
Enumerable.Range(1, 100)
.Aggregate((acc, x) => Tuple.Create(acc.Item1 + x, acc.Item2 + x * x));
Instead of combining a collection of values into a single result, let's expand a single result into a collection of values. The ea...
How to remove outliers from a dataset
I've got some multivariate data of beauty vs ages. The ages range from 20-40 at intervals of 2 (20, 22, 24....40), and for each record of data, they are given an age and a beauty rating from 1-5. When I do boxplots of this data (ages across the X-axis, beauty ratings across the Y-axis), there are so...
Normalize data in pandas
...ay you have values [-5,1,10] in a sample, but want to normalize based on a range of -7 to 7 (so anything above 7, our "10" is treated as a 7 effectively) with a midpoint of 2, but shrink it to fit a 256 RGB colormap:
#In[1]
NormData([-5,2,10],low=-7,center=1,hi=7,shrinkfactor=2./256)
#Out[1]
[0.127...
What is the difference between varchar and varchar2 in Oracle?
...language types instead of proprietary data formats. OCI can perform a wide range of data type conversions when transferring data between an Oracle database and an OCI application. There are more OCI external data types than Oracle internal data types.
The VARCHAR2 data type is a variable-length str...