大约有 40,000 项符合查询结果（耗时：0.0339秒） [XML]
Restricting input to textbox: allowing only numbers and decimal point
...ber = new RegExp(/^\d*\.?\d*$/);
var lastValid = document.getElementById("test1").value;
function validateNumber(elem) {
if (validNumber.test(elem.value)) {
lastValid = elem.value;
} else {
elem.value = lastValid;
}
}
<textarea id="test1" oninput="validateNumber(this);" >...
LEN function not including trailing spaces in SQL Server
I have the following test table in SQL Server 2005:
10 Answers
10
...
How can I escape white space in a bash loop list?
...way. The best approach is to use find -exec properly:
# this is safe
find test -type d -exec echo '{}' +
The other safe approach is to use NUL-terminated list, though this requires that your find support -print0:
# this is safe
while IFS= read -r -d '' n; do
printf '%q\n' "$n"
done < <(f...
Why is auto_ptr being deprecated?
...r< auto_ptr<int> > a_v; //USAGE ERROR
return 0;
}
>cxx test1.cpp -o test1
test1.cpp: In function âint main()â:
test1.cpp:33:11: warning: âauto_ptrâ is deprecated (declared at /apps/hermes/sw/gcc/gcc-4.8.5/include/c++/4.8.5/backward/auto_ptr.h:87) [-Wdeprecated-declarations]
...
The developers of this app have not set up this app properly for Facebook Login?
... make sure that any users that will be using the facebook app are added as testers/develoers/admins etc. (under the "roles" menu). That way you can keep the app private during development but still test out the functionality. Then just flick the switch when you go live.
– Mikey...
Daylight saving time and time zone best practices [closed]
...an use UTC, but future time scheduling and date-only values should not.)
Testing:
When testing, make sure you test countries in the Western, Eastern, Northern and Southern hemispheres (in fact in each quarter of the globe, so 4 regions), with both DST in progress and not (gives 8), and a country...
How to implement classic sorting algorithms in modern C++?
...erators.
Details omitted:
selection sort can be optimized with an early test if (std::distance(first, last) <= 1) return; (or for forward / bidirectional iterators: if (first == last || std::next(first) == last) return;).
for bidirectional iterators, the above test can be combined with a loop ...
default select option as blank
...have to make a selection. Therefore I really like this approach. (At least tested in Chrome)
– Andreas Linnert
Feb 11 '17 at 10:28
...
How do you create a static class in C++?
... GCC supports -fno-access-control, which can be used in whitebox unit tests to access otherwise private class members. That's about the only reason I can think of to justify using a class member instead of an anonymous/static global in the implementation.
– Tom
...
How to select unique records by SQL
...ression (CTE) with ROW_NUMBER()
Consider the following sample TABLE with test data:
/** Create test table */
CREATE TEMPORARY TABLE dupes(word text, num int, id int);
/** Add test data with duplicates */
INSERT INTO dupes(word, num, id)
VALUES ('aaa', 100, 1)
,('bbb', 200, 2)
,('ccc'...