大约有 2,253 项符合查询结果（耗时：0.0292秒） [XML]
Assign variable value inside if-statement [duplicate]
... @StenSoft - true. however ... i wonder if, other than an implit cast - as in long i = (int)2; - this would have any significance?
– rmalchow
Jul 23 '16 at 6:50
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Convert string[] to int[] in one line of code using LINQ
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you can simply cast a string array to int array by:
var converted = arr.Select(int.Parse)
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How to test if a double is an integer
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Is this somehow preferable to Eng.Fouad's casting example?
– Joel Christophel
Dec 9 '15 at 16:38
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Difference between two dates in MySQL
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If you are working with DATE columns (or can cast them as date columns), try DATEDIFF() and then multiply by 24 hours, 60 min, 60 secs (since DATEDIFF returns diff in days). From MySQL:
http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html
for example:
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Combining two lists and removing duplicates, without removing duplicates in original list
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Finally an answer that doesn't involve casting into sets! Kudos.
– SuperFamousGuy
Mar 25 '13 at 18:33
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How do I list all the columns in a table?
...'t work. The column_name was printed but nothing else. I had to use SELECT CAST(COLUMN_NAME AS CHAR(40)) || ' ' || DATA_TYPE to get a nice format and obtain multiple columns with concatenation.
– Eamonn Kenny
Apr 25 '19 at 11:29
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Set database timeout in Entity Framework
...ontext.Database.CommandTimeout = 180; // seconds
It's pretty simple and no cast required.
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How to update column with null value
... your column cannot be null, when you set the value to null it will be the cast value to it.
Here a example
mysql> create table example ( age int not null, name varchar(100) not null );
mysql> insert into example values ( null, "without num" ), ( 2 , null );
mysql> select * from example;
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ArrayIndexOutOfBoundsException when using the ArrayList's iterator
...Next();) {
x = iterator.next();
//do some stuff
}
Its a good practice to cast and use the object.
For example, if the 'arrayList' contains a list of 'Object1' objects. Then, we can re-write the code as:
for(Iterator iterator = arrayList.iterator(); iterator.hasNext();) {
x = (Object1) iterator.ne...
Return rows in random order [duplicate]
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Here's an example (source):
SET @randomId = Cast(((@maxValue + 1) - @minValue) * Rand() + @minValue AS tinyint);
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