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[工程源码实例] C++ ADO 读写Excel源码及注意点 - C/C++ - 清泛网 - 专注C/C++及内核技术
...HR(pRec.CreateInstance(__uuidof(Recordset)));
TESTHR(pRec->Open(sqlSelectSheet(connStr, sheetIndex).c_str(), connStr, adOpenStatic, adLockOptimistic, adCmdText));
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//读单元格，拉游标到下一行
_variant_t v = pRec->Fields->GetItem("列A")->Value;
pRec->MoveNext();
//...
Diagnosing Memory Leaks - Allowed memory size of # bytes exhausted
...ode to trawl through to find it, I'm afraid. The simplest instrument is to selectively place calls to memory_get_usage and narrow it down to where the code leaks. You can also use xdebug to create a trace of the code. Run the code with execution traces and show_mem_delta.
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Gmail Error :The SMTP server requires a secure connection or the client was not authenticated. The s
... Yes, the reason is 2 steps verification switched On for gmail account. Select App/Device and click Generate button support.google.com/accounts/answer/185833
– smily
Dec 25 '15 at 15:34
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Visual Studio immediate window command for Clear All
...ace the mouse cursor in the Immediate Window.
Right click on the mouse and select "Clear All".
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JavaScript post request like a form submit
...
This would be a version of the selected answer using jQuery.
// Post to the provided URL with the specified parameters.
function post(path, parameters) {
var form = $('<form></form>');
form.attr("method", "post");
form.attr("actio...
What's the difference between `on` and `live` or `bind`?
...emoved and only on and one will be left.
Examples:
// Using live()
$(".mySelector").live("click", fn);
// Equivalent `on` (there isn't an exact equivalent, but with good reason)
$(document).on("click", ".mySelector", fn);
// Using bind()
$(".mySelector").bind("click", fn);
// Equivalent `on`...
MySQL ON DUPLICATE KEY - last insert id?
...LAST_INSERT_ID(3000)) ON DUPLICATE KEY UPDATE id = LAST_INSERT_ID(id + 1);
SELECT LAST_INSERT_ID();
If the prefix exists, it will increment it and populate last_insert_id.
If the prefix does not exist, it will insert the prefix with the value 3000 and populate last_insert_id with 3000.
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Is there any good dynamic SQL builder library in Java? [closed]
...ut making the query utterly unreadable? Do you have an example of a nested select in an IN / EXISTS clause, or of a self-join using aliases for the Sale entity, etc? I'm curious
– Lukas Eder
Apr 12 '11 at 5:54
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How to show a dialog to confirm that the user wishes to exit an Android Activity?
... allow you to catch other ways the user can leave your app: pressing home, selecting a notification, receiving a phone call, etc.
– hackbod
Feb 13 '10 at 19:56
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Build Error - missing required architecture i386 in file
...ct name in the Project Navigator. In the properties screen which appears, select the 'Build Settings' tab. The Search Paths are located in this screen. Deleting them worked for me.
– dsteele
Feb 12 '12 at 23:16
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