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Should I pass a shared_ptr by reference? [duplicate]
...n some implementations of std::SP). It's the same if I was passing an std::string object (either const std::string& or by value).
– wolfgang
Dec 5 '11 at 13:36
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Copying a HashMap in Java
...til.HashMap;
public class CloneHashMap {
public static void main(String a[]) {
HashMap hashMap = new HashMap();
HashMap hashMap1 = new HashMap();
hashMap.put(1, "One");
hashMap.put(2, "Two");
hashMap.put(3, "Three");
System.out.pr...
jQuery / Javascript - How do I convert a pixel value (20px) to a number value (20)
I know jQuery has a helper method for parsing unit strings into numbers. What is the jQuery method to do this?
6 Answers
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How is the AND/OR operator represented as in Regular Expressions?
..., "part2" (answer 2) or "part1, part2" (answer 3).
I now try to match the string given by the user with the following, automatically created, regex expression:
...
Assigning default value while creating migration file
...generator command either but was able to specify a default value for a new string column as follows by amending the generated migration file before applying "rake db:migrate":
class AddColumnToWidgets < ActiveRecord::Migration
def change
add_column :widgets, :colour, :string, default: 'red...
Using LIMIT within GROUP BY to get N results per group?
... on the rate column instead of the year column.
The maximum length of the string returned by GROUP_CONCAT is limited, so this works well if you need to select a few records for every group.
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Update Row if it Exists Else Insert Logic with Entity Framework
...pouse.
public class Person
{
public int Id { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public string MiddleName { get; set; }
public int Age { get; set; }
public int DocumentId {get; set;}
public virtual ICollection<...
How does one escape backslashes and forward slashes in VIM find/search?
For instance, if I wanted to a find and replace with strings containing backward or forward slashes, how would this be accomplished in vim? Thank you!
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How to connect to SQL Server database from JavaScript in the browser?
...:
var connection = new ActiveXObject("ADODB.Connection") ;
var connectionstring="Data Source=<server>;Initial Catalog=<catalog>;User ID=<user>;Password=<password>;Provider=SQLOLEDB";
connection.Open(connectionstring);
var rs = new ActiveXObject("ADODB.Recordset");
rs.Open...
What does $1 [QSA,L] mean in my .htaccess file?
...ll be rewritten as index.php?url=olle).
QSA means that if there's a query string passed with the original URL, it will be appended to the rewrite (olle?p=1 will be rewritten as index.php?url=olle&p=1.
L means if the rule matches, don't process any more RewriteRules below this one.
For more co...