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What is the actual use of Class.forName(“oracle.jdbc.driver.OracleDriver”) while connecting to a dat
...more classes that implements the interface java.sql.Driver.
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Any JDBC 4.0 drivers that are found in your class path are automatically loaded. (However, you must manually load any drivers prior to JDBC 4.0 with the method Class.forName.)
Further reading (read: questions this is a dup of)
What pu...
How do you delete a column by name in data.table?
...column foo from the data.table df3:
# Method 1 (and preferred as it takes 0.00s even on a 20GB data.table)
df3[,foo:=NULL]
df3[, c("foo","bar"):=NULL] # remove two columns
myVar = "foo"
df3[, (myVar):=NULL] # lookup myVar contents
# Method 2a -- A safe idiom for excluding (possibly multiple)
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BAT file: Open new cmd window and execute a command in there
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answered Jul 9 '12 at 10:44
arossaross
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How to declare a variable in MySQL?
...lize a variable using SET or SELECT statement:
SET @start = 1, @finish = 10;
or
SELECT @start := 1, @finish := 10;
SELECT * FROM places WHERE place BETWEEN @start AND @finish;
User variables can be assigned a value from a limited set of data
types: integer, decimal, floating-point, binar...
OwinStartup not firing
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edited Sep 10 '19 at 12:41
Uwe Keim
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Are C++ enums signed or unsigned?
... an input by checking that it is = your min value (assuming you started at 0 and incremented by 1)?
9 Answers
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When should I make explicit use of the `this` pointer?
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edited Jun 14 '09 at 19:50
Bastien Léonard
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Call Activity method from adapter
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307
Yes you can.
In the adapter Add a new Field :
private Context mContext;
In the adapter Cons...
How can I change the file type association of an existing file in WebStorm?
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10 Answers
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How do I get an ISO 8601 date on iOS?
It's easy enough to get the ISO 8601 date string (for example, 2004-02-12T15:19:21+00:00 ) in PHP via date('c') , but how does one get it in Objective-C (iPhone)? Is there a similarly short way to do it?
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