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C++使用OLE/COM高速读写EXCEL的源码 - C/C++ - 清泛网 - 专注C/C++及内核技术
...app;
///是否已经预加载了某个sheet的数据
BOOL already_preload_;
///Create the SAFEARRAY from the VARIANT ret.
COleSafeArray ole_safe_array_;
LPDISPATCH m_lpDisp;
};
ExcelOp.cpp
#include "StdAfx.h"
#include "ExcelOp.h"
#ifdef _DEBUG
#define new...
What is a “surrogate pair” in Java?
I was reading the documentation for StringBuffer , in particular the reverse() method. That documentation mentions something about surrogate pairs . What is a surrogate pair in this context? And what are low and high surrogates?
...
Why is access to the path denied?
...s an executable file that is in use.
Path is a directory.
Path specified a read-only file.
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What are the implications of using “!important” in CSS? [duplicate]
...verride website styles. It's used a lot by accessibility tools like screen readers, ad blockers, and more.
Overriding 3rd party code & inline styles.
Generally I'd say this is a case of code smell, but sometimes you just have no option. As a developer, you should aim to have as much control ov...
In vim, how do I go back to where I was before a search?
...
You really should read :help jumplist it explains all of this very well.
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String comparison in Python: is vs. == [duplicate]
...ed. The statement
if x is y then x==y is also True
should never be read to mean
if x==y then x is y
It is a logical error on the part of the reader to assume that the converse of a logic statement is true. See http://en.wikipedia.org/wiki/Converse_(logic)
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Single Page Application: advantages and disadvantages [closed]
I've read about SPA and it advantages. I find most of them unconvincing. There are 3 advantages that arouse my doubts.
11 A...
What is the Difference Between Mercurial and Git?
... what you should expect them to be (that is, if I modify a changeset you already have, your client will see it as new if you pull from me). So Mercurial has a bias towards non-destructive commands.
As for light-weight branches, then Mercurial has supported repositories with multiple branches since....
What are the differences between B trees and B+ trees?
... the pointers in a single page of memory. We want to require only one disk read per leaf access, so we don't want to assign more than a page size of pointers to a leaf. If we fill a leaf with a page size of pointers, and then we want to add another pointer to this leaf, we create two children of thi...
Merge and interleave two arrays in Ruby
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@Leo, @chuck: if you read the example you will see that Chris wants to interleave the elements, not concatenate them. Essentially, he wants [a, s].transpose except that the two rows don't conform, leaving #zip as the obvious solution. And I don't...