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Fastest check if row exists in PostgreSQL
...ch of rows that I need to insert into table, but these inserts are always done in batches. So I want to check if a single row from the batch exists in the table because then I know they all were inserted.
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Can I use a function for a default value in MySql?
... This isn't quite the same as having a DEFAULT value. How would one change this answer to only set the key if the value was NULL?
– ToolmakerSteve
Apr 1 '15 at 17:38
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import module from string variable
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For anyone who's coming here from Google. It should be noted that if you're trying to import something from a sub-folder (for example, ./feature/email.py) the code will look like importlib.import_module("feature.email")
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What does @: (at symbol colon) mean in a Makefile?
...rams, and where you want to use echo a lot to make it look nice, like this one
– dwcoder
Jul 17 '15 at 15:04
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How to tell when UITableView has completed ReloadData?
I am trying to scroll to the bottom of a UITableView after it is done performing [self.tableView reloadData]
19 Answers
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throwing exceptions out of a destructor
...own to:
Anything dangerous (i.e. that could throw an exception) should be done via public methods (not necessarily directly). The user of your class can then potentially handle these situations by using the public methods and catching any potential exceptions.
The destructor will then finish off the...
If vs. Switch Speed
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So a conclusion might be use switch/case for simple types that are only one level deep, but for more complex comparisons and multiple nested levels use the classic if/else constructs?
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How to open an elevated cmd using command line for Windows?
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Good answer. I added and edit I used to make it run in one command line!
– Preet Sangha
Oct 20 '15 at 21:28
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ASP.NET MVC - passing parameters to the controller
...the routing on global.asax (i do not recommed that)
and, can't believe no one mentioned this, you can call :
http://localhost:2316/Inventory/ViewStockNext?firstItem=11
In a @Url.Action would be :
@Url.Action("ViewStockNext", "Inventory", new {firstItem=11});
depending on the type of what you ...
What is the shortest way to pretty print a org.w3c.dom.Document to stdout?
...ake me write ridiculous number of lines of code for something that can be done in one or two in other languages... with full control too..
– l46kok
Jun 16 '13 at 15:54
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