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What is difference between XML Schema and DTD?
... <year>
2000 //---> I can also use a string,not good
</year>
</student>
</university>
XML Schema Definition (XSD)
<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<x...
php Replacing multiple spaces with a single space [duplicate]
...here a way to get rid of all spaces at the right & and the left of the string? for example, " a b c ", would be "a b c", I know we could use trim($output), but it would be nice to have it in regex
– eawedat
Feb 1 '17 at 22:31
...
python ? (conditional/ternary) operator for assignments [duplicate]
...ed to False => so you will NEVER get values like 0 (int zero), ""(empty string), [] empty array, False, and other "empty" values => because they evaluate to False => True and False is False :) Some languages even consider "0" (zero as string) as empty value :)
– jave...
How to manually install an artifact in Maven 2?
...ith Maven 2. I wanted to install a jar from a local directory with the command
6 Answers
...
How to rename a single column in a data.frame?
...set the second column's name. Your object only has one column, so the command throws an error. This should be sufficient:
colnames(trSamp) <- "newname2"
share
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How do I create an Excel (.XLS and .XLSX) file in C# without installing Microsoft Office?
... example with OleDB)
OleDbConnection con = new OleDbConnection(dbConnectionString);
con.Open();
//Create a query and fill the data table with the data from the DB
string sql = "SELECT Whatever FROM MyDBTable;";
OleDbCommand cmd = new OleDbCommand(sql, con);
OleDbDataAdapter adptr = new OleDbDataAda...
How do I add more members to my ENUM-type column in MySQL?
...
enum is just a fancy integer, with a string representation. adding items to the end is fine, since you just add meaning old values. but changing the order / removing enums will make those numbers undefined. (eg. 1=>italy, 2=>germany), then extending will b...
How do you calculate log base 2 in Java for integers?
... = pow(base, pow);
if (pow != log(x, base))
System.out.println(String.format("error at %d^%d", base, pow));
if(pow!=0 && (pow-1) != log(x-1, base))
System.out.println(String.format("error at %d^%d-1", base, pow));
}
public static void main(String[] args) {
for (i...
delete_all vs destroy_all?
...ave a user whose user ID is across many tables. I want to delete this user and every record that has his ID in all tables.
...
Java Pass Method as Parameter
...void execute(Object data)
{
System.out.println(data.toString());
}
}
public static void callCommand(Command command, Object data)
{
command.execute(data);
}
public static void main(String... args)
{
callCommand(new PrintCom...