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Most concise way to convert a Set to a List
... after this when I tried to access list element it giving me error, " java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.String" ..don;t know why..it's simple list.get(int) that's it ...any suggestion ?
– CoDe
Jun 20 '14 a...
How to concatenate string variables in Bash
...ikthxbye
This is useful when
$blaohai
leads to a variable not found error. Or if you have spaces or other special characters in your strings. "${foo}" properly escapes anything you put into it.
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How to check for a JSON response using RSpec?
... and unfortunately it says that it got a response of " ". Could this be an error in the controller?
– Fizz
Mar 2 '11 at 3:25
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Why use try {} finally {} with an empty try block?
...ead is aborted.
This is because in order to recover successfully from an error, your code will need to clean up after itself. Since C# doesn't have C++-style destructors, finally and using blocks are the only reliable way of ensuring that such cleanup is performed reliably. Remember that using blo...
.NET HashTable Vs Dictionary - Can the Dictionary be as fast?
...fferences between Hashtable and Dictionary
Dictionary:
Dictionary returns error if we try to find a key which does not exist.
Dictionary faster than a Hashtable because there is no boxing and unboxing.
Dictionary is a generic type which means we can use it with any data type.
Hashtable:
Hashtable...
Django Admin - change header 'Django administration' text
... This throws a "You don't have permission to edit anything" error message when I try to access the /myadmin/. Looks like I should call .autodiscover, but Django 1.7 it's supposed to be called automatically. Any clue?
– David Arcos
Jul 29 '14 at ...
How do I quickly rename a MySQL database (change schema name)?
...o another database using above method (will result Trigger in wrong schema error). If that is the case, use a traditional way to clone a database and then drop the old one:
mysqldump old_db | mysql new_db
If you have stored procedures, you can copy them afterwards:
mysqldump -R old_db | mysql new_...
Why is there no std::stou?
...al & mask) == 0 )
uival = (unsigned int)ulval;
else {
...range error...
}
Using masks to do this with the expected value size in bits expressed in the mask, will make this work for 64-bit longs vs 32-bit ints, but also for 32-bit longs vs 32-bit ints.
In the case of 64-bit longs, ~0xf...
html select option separator
... An empty optgroup like this is not legal html. You'll get validation errors if you use it. I prefer james.garriss's answer.
– Ariel
Sep 28 '11 at 11:58
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Easiest way to open a download window without navigating away from the page
... for this solution, but I found a bug if removeChild(a) the zip will unzip error with zip is broken, so remove this code solve it
– Roy
Sep 18 '17 at 3:16
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