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Pattern to avoid nested try catch blocks?
...hus it is definitely better in terms of abstraction and maintainability to convert it into a conditional method with return whether it is succeeded or not, this way you hide the exception handling messy syntax with a clear descriptive method .. then your code will handle it as it is a regular condit...
Unique (non-repeating) random numbers in O(1)?
... max
At each iteration, a random number r is selected between 0 and max, array[r] and array[max] are swapped, the new array[max] is returned, and max is decremented:
max = 10, r = 3
+--------------------+
v v
+--+--+--+--+--+--+...
Parsing Visual Studio Solution files
...ferent in that we wanted VS to sort out the build order for us, so we then converted any dll references to project references where possible.
We then automated this into a build process by running VS via COM automation.
This solution was a little Heath Robinson, but had the advantage that VS was d...
What's the difference between the four File Results in ASP.NET MVC
...behaving strangely when they were using Chrome and the file type was being converted over to 'pdf-, attachment.pdf-, attachment'. Yup...you got it...the whole thing. So, one could rewrite it to just be 'pdf' and the file would still save intact, but what a mess!
So, to describe the initial situatio...
Calculate number of hours between 2 dates in PHP
...te difficult to take leap seconds into account).
The most flexible way to convert a datetime string with optional timezone information into a Unix timestamp is to construct a DateTime object (optionally with a DateTimeZone as a second argument in the constructor), and then call its getTimestamp met...
Django in / not in query
...
table1.objects.extra(where=["table1.id NOT IN (SELECT table2.key_to_table1 FROM table2 WHERE table2.id = some_parm)"])
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How do I create an array of strings in C?
...rray expressions; under most circumstances, an expression of type T [N] is converted to an expression of type T *, and the value of the expression is the address of the first element. So if you wrote str = "foo", you'd be trying to assign the address of the first character of "foo" to the array str...
Running bash script from within python
... subprocess.check_call("./script.sh '%s'" % arg, shell=True)
Remember to convert the args to string before passing, using str(arg).
This can be used to pass as many arguments as desired:
subprocess.check_call("./script.ksh %s %s %s" % (arg1, str(arg2), arg3), shell=True)
...
How to install mongoDB on windows?
...d as an Administrator. For example, to move the folder to C:\mongodb:
Select Start Menu > All Programs > Accessories.
Right-click Command Prompt and select Run as Administrator from the popup menu.
Issue the following commands:
cd \
move C:\mongodb-win32-* C:\mongodb
...
How to import CSV file data into a PostgreSQL table?
...iter '','' quote ''"'' csv ', csv_path);
iter := 1;
col_first := (select col_1 from temp_table limit 1);
-- update the column names based on the first row which has the column names
for col in execute format('select unnest(string_to_array(trim(temp_table::text, ''()''), '','')) fro...