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How to check that a string is an int, but not a double, etc.?
PHP has an intval() function that will convert a string to an integer. However I want to check that the string is an integer beforehand, so that I can give a helpful error message to the user if it's wrong. PHP has is_int() , but that returns false for string like "2" .
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How do I access call log for android?
..._log/calls");
Cursor c = managedQuery(allCalls, null, null, null, null);
String num= c.getString(c.getColumnIndex(CallLog.Calls.NUMBER));// for number
String name= c.getString(c.getColumnIndex(CallLog.Calls.CACHED_NAME));// for name
String duration = c.getString(c.getColumnIndex(CallLog.Calls.DUR...
Checking if a string is empty or null in Java [duplicate]
I'm parsing HTML data. The String may be null or empty, when the word to parse does not match.
5 Answers
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Does JavaScript have a built in stringbuilder class?
...ke sure you chose an implementation, which uses array joins. Concatenating strings with the + or += operator are extremely slow on IE. This is especially true for IE6. On modern browsers += is usually just as fast as array joins.
When I have to do lots of string concatenations I usually fill an ar...
Check if string begins with something? [duplicate]
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Use stringObject.substring
if (pathname.substring(0, 6) == "/sub/1") {
// ...
}
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How to store custom objects in NSUserDefaults
...g from NSUserDefaults:
- (void)saveCustomObject:(MyObject *)object key:(NSString *)key {
NSData *encodedObject = [NSKeyedArchiver archivedDataWithRootObject:object];
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
[defaults setObject:encodedObject forKey:key];
[def...
How do I put a variable inside a string?
I would like to put an int into a string . This is what I am doing at the moment:
8 Answers
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Is there a C# case insensitive equals operator?
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Try this:
string.Equals(a, b, StringComparison.CurrentCultureIgnoreCase);
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String comparison using '==' vs. 'strcmp()'
...=== only returns true or false, it doesn't tell you which is the "greater" string.
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Process escape sequences in a string in Python
Sometimes when I get input from a file or the user, I get a string with escape sequences in it. I would like to process the escape sequences in the same way that Python processes escape sequences in string literals .
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