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How to test an SQL Update statement before running it?
... @rickozoe below:
In general these lines will not be executed as once. In PHP f.e. you would write something like that (perhaps a little bit cleaner, but wanted to answer quick ;-) ):
$MysqlConnection->query('START TRANSACTION;');
$erg = $MysqlConnection->query('UPDATE MyGuests SET lastname=...
throwing exceptions out of a destructor
...mory for Object go? Where does the memory the object owned go? Is it still allocated (ostensibly because the destructor failed)? Consider also the object was in stack space, so its obviously gone regardless.
Then consider this case
class Object
{
Object2 obj2;
Object3* obj3;
virtual ~Obj...
How to present popover properly in iOS 8
..."PopoverView"];
UINavigationController *nav = [[UINavigationController alloc]initWithRootViewController:controller];
nav.modalPresentationStyle = UIModalPresentationPopover;
UIPopoverPresentationController *popover = nav.popoverPresentationController;
controller.preferredContentSize ...
Browse the files created on a device by the iOS application I'm developing, on workstation?
...xport some app files! http://www.macroplant.com/iexplorer/download-ie3-mac.php
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MySQL: #126 - Incorrect key file for table
... due to full disk for me. I'm getting this error on an Amazon RDS instance allocated for 10GB that's only 1% full. Low memory may also be a reason.
– Cerin
Jan 2 '14 at 23:05
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What's the fastest way to merge/join data.frames in R?
...ata.table is actually timing base functions colMeans and cbind (the memory allocation and copying induced by using those functions). There are good and bad ways of using data.table, too.
benchmark(replications = 1, order = "elapsed",
aggregate = aggregate(d[c("x", "y")], d[c("g1", "g2")], mean),...
How can I check if a string represents an int, without using try/except?
...o only use it for error trapping and reporting.
I was going to gripe that PHP, perl, ruby, C, and even the freaking shell have simple functions for testing a string for integer-hood, but due diligence in verifying those assumptions tripped me up! Apparently this lack is a common sickness.
Here'...
Jump to matching XML tags in Vim
...lled matchit.vim . You can find it here: http://www.vim.org/scripts/script.php?script_id=39 . It was created pretty much the exact purpose you describe.
Install that, place your cursor on the body of the tag (not the <>, else it'll match those) and press % to jump to the other tag. See the sc...
Deep null checking, is there a better way?
... lexical constructs that require us to "look ahead" arbitrarily far in the token stream. (Though, unfortunately, there already are such constructs in C#; we'd rather not add any more.)
– Eric Lippert
Jan 17 '10 at 18:44
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Smooth GPS data
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kalman.sourceforge.net/index.php here is C++ implementation of Kalman filter.
– Rostyslav Druzhchenko
Aug 21 '14 at 9:04
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