大约有 16,000 项符合查询结果（耗时：0.0207秒） [XML]
What is the ideal data type to use when storing latitude / longitude in a MySQL database?
...and how the FLOAT specification works: FLOAT(10,6) leaves 4 digits for the integer part of the coordinate. And no, the sign doesn't count - that comes from the (un)signed attribute.
– Alix Axel
May 9 '13 at 9:54
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MongoDb query condition on comparing 2 fields
...ct matches between dates in queries. One workaround is using .getTime() to convert to milliseconds or whatever: this.startDate.getTime() == ISODate("2017-01-20T10:55:08.000Z").getTime()
– leinaD_natipaC
Oct 1 '19 at 10:28
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Serializing with Jackson (JSON) - getting “No serializer found”?
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I am getting this error while converting ClientResponse to string using object mapper
– VdeX
May 24 '17 at 14:03
3
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Formatting numbers (decimal places, thousands separators, etc) with CSS
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I like it. But I needed to also convert the number to a string before the replace. You can not do a replace on a number.
– Mardok
May 27 '16 at 18:47
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Hidden Features of Java
...ls beyond just locks, they live in java.util.concurrent and a specifically interesting example is the java.util.concurrent.atomic subpackage that contains thread-safe primitives that implement the compare-and-swap operation and can map to actual native hardware-supported versions of these operations...
undefined reference to `WinMain@16'
...g Windows API-level program:
#define NOMINMAX
#include <windows.h>
int main()
{
MessageBox( 0, "Blah blah...", "My Windows app!", MB_SETFOREGROUND );
}
Now let's build it using GNU toolchain (i.e. g++), no special options. Here gnuc is just a batch file that I use for that. It only sup...
Alter Table Add Column Syntax
...loyeeID numeric NOT NULL IDENTITY (1, 1)
ALTER TABLE Employees ADD CONSTRAINT
PK_Employees PRIMARY KEY CLUSTERED
(
EmployeeID
) WITH( STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF,
ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
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How can I define a composite primary key in SQL?
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CREATE TABLE `voting` (
`QuestionID` int(10) unsigned NOT NULL,
`MemberId` int(10) unsigned NOT NULL,
`vote` int(10) unsigned NOT NULL,
PRIMARY KEY (`QuestionID`,`MemberId`)
);
s...
What does threadsafe mean?
...he mechanism used though multiple threads running the same code should not interfere with each other.
– Vincent Ramdhanie
Mar 28 '16 at 15:49
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Moment.js: Date between dates
...e special format, then one can able to prepare date ranges inside array by converting those dates with required format and then we can compare.
– Sajjad Ali Khan
Jan 13 '16 at 19:10
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