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Ruby custom error classes: inheritance of the message attribute
...o in my question does it like this: raise(BillRowError.new(:roamingcalls, @index), "Roaming Calls field missing"). So he calls raise with two parameters: a new BillRowError object, and his message. I'm just confused by the syntax... On other tutorials I always see it like this: raise Error, message
...
What is the Scala identifier “implicitly”?
...
A "teach you to fish" answer is to use the alphabetic member index currently available in the Scaladoc nightlies. The letters (and the #, for non-alphabetic names) at the top of the package / class pane are links to the index for member names beginning with that letter (across all clas...
What is the C runtime library?
...ether into one bigger file. The archive will usually contain at least some indexing to make it relatively fast/easy to find and extract the data from the internal files. At least at times, Microsoft has used a library format with an "extended" index the linker can use to find which functions are imp...
Database design for audit logging
...) and the date/time of that change.
The following SQL creates the blog and indexes the deleted column:
CREATE TABLE `blog` (
`id` mediumint(8) unsigned NOT NULL AUTO_INCREMENT,
`title` text,
`content` text,
`deleted` tinyint(1) unsigned NOT NULL DEFAULT '0',
PRIMARY KEY (`id`),
...
Code-first vs Model/Database-first [closed]
...mitations you face when using code-first, e.g. you can not create a unique index on a field or you can not delete hierarchical data in a tree table for this you need a CTE using the context.Table.SqlQuery("select..."). Model/Database first do not have these drawbacks.
– Elisabe...
Difference between array_map, array_walk and array_filter
...values-directly, unless passed value by reference (array walk might remove indexes/elements as array_filter indirectly via anonymous function use clause passing the original array but it's a workaround). To conclude thus, changing values, nor if a value is returned or passed by reference is of less ...
Choice between vector::resize() and vector::reserve()
...ave an upper bound. Of course when in doubt, with vectors you can just use indexes instead of iterators, the difference is usually negligible.
– Steve Jessop
Sep 13 '11 at 9:33
4
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Learn C first before learning Objective-C [closed]
...rrays with memcopy instead of taking data from one array to the other one, index for index. The result: A speed up by the factor 4. The graph animated smoothly, even on older PPC systems.
The weakness of C is that every more complex program gets ugly in the long run. Keeping C applications readable...
Improving bulk insert performance in Entity framework [duplicate]
...it in all scenarios since it depends on multiple factors such as row size, index, trigger, etc.
It's normally recommended to be around 4000.
Also is there a way to tie it all in one transaction and not worry about it timing out
You can use Entity Framework transaction. Our library uses the tr...
How to write the Fibonacci Sequence?
... + b # a will now be 1, and b will also be 1, (0 + 1)
and usage:
for index, fibonacci_number in zip(range(10), fib()):
print('{i:3}: {f:3}'.format(i=index, f=fibonacci_number))
prints:
0: 0
1: 1
2: 1
3: 2
4: 3
5: 5
6: 8
7: 13
8: 21
9: 34
10: 55
...