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How do I add indices to MySQL tables?
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Hash converted to btree when I see using show indexes.
– RN Kushwaha
Oct 15 '15 at 6:18
1
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Can you avoid Gson converting “” into unicode escape sequences?
I noticed that Gson converts the string "
1 Answer
1
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Convert float to double without losing precision
...e exactly 0.100000234523. d will have exactly the same value, but when you convert it to a string it will "trust" that it's accurate to a higher precision, so won't round off as early, and you'll see the "extra digits" which were already there, but hidden from you.
When you convert to a string and ...
How to detect READ_COMMITTED_SNAPSHOT is enabled?
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SELECT is_read_committed_snapshot_on FROM sys.databases
WHERE name= 'YourDatabase'
Return value:
1: READ_COMMITTED_SNAPSHOT option is ON. Read operations under the READ COMMITTED isolation level are based on snapshot scans and do not acquire locks.
0 (default)...
How to convert java.sql.timestamp to LocalDate (java8) java.time?
In Java 8, how can I convert a Timestamp (in java.sql ) to a LocalDate (in java.time )?
3 Answers
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Convert a row of a data frame to vector
... you extract a single row from a data frame you get a one-row data frame. Convert it to a numeric vector:
as.numeric(df[1,])
As @Roland suggests, unlist(df[1,]) will convert the one-row data frame to a numeric vector without dropping the names. Therefore unname(unlist(df[1,])) is another, sl...
What is a raw type and why shouldn't we use it?
... // compilation error!
// incompatible types: Object cannot be converted to String
for (String str : rawType.getNames())
System.out.print(str);
}
}
When we use the raw MyType, getNames becomes erased as well, so that it returns a raw List!
JLS 4.6 continues to ex...
Convert HTML to PDF in .NET
...PdfSharp nuget package.
Use Example Method.
public static Byte[] PdfSharpConvert(String html)
{
Byte[] res = null;
using (MemoryStream ms = new MemoryStream())
{
var pdf = TheArtOfDev.HtmlRenderer.PdfSharp.PdfGenerator.GeneratePdf(html, PdfSharp.PageSize.A4);
pdf.Save(m...
Convert integer into its character equivalent, where 0 => a, 1 => b, etc
I want to convert an integer into its character equivalent based on the alphabet. For example:
12 Answers
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How do you kill all current connections to a SQL Server 2005 database?
...nnot be killed'
RETURN
END
SELECT @spidstr=coalesce(@spidstr,',' )+'kill '+convert(varchar, spid)+ '; '
FROM master..sysprocesses WHERE dbid=db_id(@DBName)
IF LEN(@spidstr) > 0
BEGIN
EXEC(@spidstr)
SELECT @ConnKilled = COUNT(1)
FROM master..sysprocesses WHERE dbid=db_id(@DBName)
END
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