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Is it a good practice to use try-except-else in Python?
...o, the use of exceptions in Python does not slow the surrounding code and calling code as it does in some compiled languages (i.e. CPython already implements code for exception checking at every step, regardless of whether you actually use exceptions or not).
In other words, your understanding that...
How do I sort strings alphabetically while accounting for value when a string is numeric?
...umeric1 && IsNumeric2)
{
var i1 = Convert.ToInt32(s1);
var i2 = Convert.ToInt32(s2);
if (i1 > i2)
{
return S1GreaterThanS2;
}
if (i1 < i2)
{
return S2GreaterTha...
Download a file by jQuery.Ajax
...ence is when a file download occurs.
I created jQuery File Download which allows for an "Ajax like" experience with file downloads complete with OnSuccess and OnFailure callbacks to provide for a better user experience. Take a look at my blog post on the common problem that the plugin solves and so...
Handling optional parameters in javascript
... second argument is a function or not:
function getData (id, parameters, callback) {
if (arguments.length == 2) { // if only two arguments were supplied
if (Object.prototype.toString.call(parameters) == "[object Function]") {
callback = parameters;
}
}
//...
}
You can also us...
Disable LESS-CSS Overwriting calc() [duplicate]
...
@gion_13 You're actually right, you can turn on the Strict Math setting. Time to polish this answer a bit. =]
– Fabrício Matté
May 27 '14 at 15:20
...
SecurityException: Permission denied (missing INTERNET permission?)
this error is really really really strange and I don't know how to reproduce it and how to fix it because I made a lot of searches but nothing was useful.
...
How to determine if an NSDate is today?
...ethod anyway.
NOTE as with many answers on SO, after 7 years this is totally out of date. In Swift now just use .isDateInToday
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Change priorityQueue to max priorityqueue
...unction, names its input parameters x and y and returns y-x, which is basically what the int comparator class does except it returns x-y
– Edi Bice
Jun 22 '17 at 19:44
15
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PostgreSQL error 'Could not connect to server: No such file or directory'
...u are on OS X
Here is the fix:
Stop the database
cd /var
sudo rm -r pgsql_socket
sudo ln -s /tmp pgsql_socket
chown _postgres:_postgres pgsql_socket
Restart PostgreSQL (not your computer)
More information is available at "postgresql 9.0.3. on Lion Dev Preview 1".
...
Hash String via SHA-256 in Java
... output = bigInt.toString(16);
while ( output.length() < 32 ) {
output = "0"+output;
}
}
catch (Exception e) {
e.printStackTrace(System.err);
return null;
}
return output;
}
In a JEE6+ environment one could also use JAXB DataT...