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how to check if object already exists in a list
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Simply use Contains method. Note that it works based on the equality function Equals
bool alreadyExist = list.Contains(item);
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One Activity and all other Fragments [closed]
... 1 activity, and 17 fragments, all full screen. This is my second fragment based project(previous was 4 months).
Pros
The main activity is 700 lines of code, just nicely managing the order of the fragments navigation.
Each fragment is nicely separated into it's own class, and is relatively small ...
Calling a method every x minutes
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I based this on @asawyer's answer. He doesn't seem to get a compile error, but some of us do. Here is a version which the C# compiler in Visual Studio 2010 will accept.
var timer = new System.Threading.Timer(
e => MyMet...
How to remove all the occurrences of a char in c++ string
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Based on other answers, here goes one more example where I removed all special chars in a given string:
#include <iostream>
#include <string>
#include <algorithm>
std::string chars(".,?!.:;_,!'\"-");
int ...
Options, Settings, Properties, Configuration, Preferences — when and why?
...tions:
Settings : 24
Options : 15
Preferences : 12
Config(uration) : 1
Based on this, I'd sort these in this order (from general/fixed/app-related to specific/dynamic/user-related):
Settings > Options > Preferences
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How do I remove a property from a JavaScript object?
...efaults to the end of the array. If end is positive, it specifies the zero-based non-inclusive index to stop at. If end is negative it, it specifies the index to stop at by counting back from the end of the array (eg. -1 will omit the final index). If end <= start, the result is an empty array.
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How to delete object from array inside foreach loop?
... iterate through an array of objects and want to delete one of the objects based on it's 'id' property, but my code doesn't work.
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Unable to cast object of type 'System.DBNull' to type 'System.String`
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That won't work - the "accountNumber" is not a database value but a regular old Plain Old .NET "object" instance - you need to check against normal "null" value. The DBNull.Value would work for a SqlDataReader or a SqlParameter - but not for this object here.
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How to get scrollbar position with Javascript?
...evenues.
Deciding whether or not to perform tasks or animation processes based on whether or not the user will see the result.
Implementing intersection detection in the past involved event
handlers and loops calling methods like
Element.getBoundingClientRect() to build up the needed i...
Properly escape a double quote in CSV
...ify which particular format, so I feel it's unfair to downvote this answer based on presumptions about a specific document.
– c z
Aug 13 at 11:40
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