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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
...har *CExcelOp::GetColumnName(long icolumn)
{
static char column_name[64];
size_t str_len = 0;
while(icolumn > 0)
{
int num_data = icolumn % 26;
icolumn /= 26;
if (num_data == 0)
{
num_data = 26;
icolumn--;
}
column_name[str_len] = (char)((num_data-1) + 'A' );
...
File size exceeds configured limit (2560000), code insight features not available
...ns for changing this settings in latest Jetbrains products
Editing product64.vmoptions didnt worked for me, but editing idea.properties worked ok.
Also in order to be able to work with large files you may need to change values for in product64.vmoptions / product.vmoptions for -Xms and
-Xmx
...
How to use CSS to surround a number with a circle?
...ed to tweak the size of the outer container so that it is the perfect size based on the font size and number of characters to be displayed. If you are mixing 1 digit numbers and 4 digit numbers, it won't work. If the ratio between the font size and the circle size isn't perfect, you'll either end up...
How to make PDF file downloadable in HTML link?
...
works like a charm with chrome Version 39.0.2171.65 (64-bit) !
– edelans
Nov 21 '14 at 20:32
The...
What is the difference between BIT and TINYINT in MySQL?
... the column as a check box if they check the type and decide upon a format based on that.
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Search for one value in any column of any table inside a database
...pe char(64) ) inside any column of any table inside one MS SQL Server database?
7 Answers
...
C dynamically growing array
... 3/2 gives you 50% worst and 25% typical. It's also close to the effective base of the Fibionacci sequence in the limit (phi) which is often praised and used for its "exponential but much less violently than base-2" characteristics, but easier to calculate. The +8 means that arrays which are reasona...
python pandas: apply a function with arguments to a series
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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SQL SELECT speed int vs varchar
...
Some rough benchmarks:
4 million records in Postgres 9.x
Table A = base table with some columns
Table B = Table A + extra column id of type bigint with random numbers
Table C = Table A + extra column id of type text with random 16-char ASCII strings
Results on 8GB RAM, i7, SSD laptop:
Siz...
Share data between AngularJS controllers
...="text" ng-model="Beta.Field">
Second {{Beta.Field}}
</div>
Demo: http://jsfiddle.net/HEdJF/
When applications get larger, more complex and harder to test you might not want to expose the entire object from the factory this way, but instead give limited access for example via getters...