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How to remove elements from a generic list while iterating over it?
...ist allows you to do a Remove(item) on your generic List:
List<String> strings = new List<string>() { "a", "b", "c", "d" };
foreach (string s in strings.ToArray())
{
if (s == "b")
strings.Remove(s);
}
...
Difference between ref and out parameters in .NET [duplicate]
...nction. It's like if you could write this:
// This is not C#
public (bool, string) GetWebThing(string name, ref Buffer paramBuffer);
// This is C#
public bool GetWebThing(string name, ref Buffer paramBuffer, out string actualUrl);
Here's a more detailed list of the effects of each alternative:
Bef...
How do I prevent the padding property from changing width or height in CSS?
... change your div width to 160px
if you have a padding of 20px it adds 40px extra to the width of your div so you need to subtract 40px from the width in order to keep your div looking normal and not distorted with extra width on it and your text all messed up.
...
Understanding Spring @Autowired usage
...(Color color) {
this.color = color;
}
The @Resource (you can read some extra data about it in the first comment on this answer) spares you the use of two annotations and instead you only use one.
I'll just add two more comments:
Good practice would be to use @Inject instead of @Autowired beca...
Return 0 if field is null in MySQL
...) returns expr1; otherwise it returns expr2. IFNULL() returns a numeric or string value, depending on the context in which it is used.
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How to copy a row and insert in same table with a autoincrement field in MySQL?
...INFORMATION_SCHEMA ... I wonder if you could do it as a sub-query and some string functions? Hmmm...
– Yzmir Ramirez
Feb 6 '12 at 6:35
1
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PHP random string generator
I'm trying to create a randomized string in PHP, and I get absolutely no output with this:
59 Answers
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ruby on rails f.select options with custom attributes
...
def options_for_select(container, selected = nil)
return container if String === container
container = container.to_a if Hash === container
selected, disabled = extract_selected_and_disabled(selected)
options_for_select = container.inject([]) do |options, element|
html_attrib...
PreparedStatement IN clause alternatives?
...ng multiple comma-delimited parameters.
*
* @param sql The SQL statement string with one IN clause.
* @param params The number of parameters the SQL statement requires.
* @return The SQL statement with (?) replaced with multiple parameter
* placeholders.
*/
public static String any(String sql,...
SQL Server: Examples of PIVOTing String data
...e found involve counting or summing up numbers. I just want to pivot some string data. For example, I have a query returning the following.
...