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Is there a more elegant way of adding an item to a Dictionary safely?
... it's already there, but it doesn't have to be there first:
Dictionary<string, object> currentViews = new Dictionary<string, object>();
currentViews["Customers"] = "view1";
currentViews["Customers"] = "view2";
currentViews["Employees"] = "view1";
currentViews["Reports"] = "view1";
Bas...
Objective-C: Calling selectors with multiple arguments
...
Your method signature is:
- (void) myTest:(NSString *)
withAString happens to be the parameter (the name is misleading, it looks like it is part of the selector's signature).
If you call the function in this manner:
[self performSelector:@selector(myTest:) withObjec...
SQLite - How do you join tables from different databases?
...lQuery"></param>
public static DataTable GetDataTableFrom2DBFiles(string attachSQL, string sqlQuery)
{
try
{
string conArtistName = "data source=" + path + ";";
using (SQLiteConnection singleConnectionFor2DBFiles = new SQLiteConnection(conArtistName))
{
...
How to determine total number of open/active connections in ms sql server 2005
...om repository
using (SqlConnection conn = new SqlConnection(this.connectionString))
{
using (SqlCommand cmd = conn.CreateCommand())
{
cmd.CommandText = "LoadFromRepository";
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@ID", fileID);
...
what is difference between success and .done() method of $.ajax
...g NaN values and serializing them as javascript NaN (i.e. as a symbol, not string 'NaN') which is actually not valid JSON -- so the parsing of the response as JSON fails and .fail() is executed, but the response status is 200. But it's still true that success ONLY gets called with an OK status code;...
Logging errors in ASP.NET MVC
...rContext)
{
// You could use any logging approach here
StringBuilder builder = new StringBuilder();
builder
.AppendLine("----------")
.AppendLine(DateTime.Now.ToString())
.AppendFormat("Source:\t{0}", filterContext.Exception.Source)
...
What is the “realm” in basic authentication
...uthentication scheme and/or
authorization database. The realm value is a string, generally
assigned by the origin server, which may have additional semantics
specific to the authentication scheme.
In short, pages in the same realm should share credentials. If your credentials work for a pag...
Formatting a number with exactly two decimals in JavaScript
...num = 2.4;
alert(num.toFixed(2)); // "2.40"
Note that toFixed() returns a string.
IMPORTANT: Note that toFixed does not round 90% of the time, it will return the rounded value, but for many cases, it doesn't work.
For instance:
2.005.toFixed(2) === "2.00"
UPDATE:
Nowadays, you can use the Intl.Numb...
Difference between getDefaultSharedPreferences and getSharedPreferences
...me(context),
getDefaultSharedPreferencesMode());
}
private static String getDefaultSharedPreferencesName(Context context) {
return context.getPackageName() + "_preferences";
}
private static int getDefaultSharedPreferencesMode() {
return Context.MODE_PRIVATE;
}
...
Is it better to return null or empty collection?
... mentioned. Consider the following code:
public static IEnumerable<string> GetFavoriteEmoSongs()
{
yield break;
}
The C# Language will return an empty enumerator when calling this method. Therefore, to be consistant with the language design (and, thus, programmer expecta...