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Finding duplicate values in MySQL
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What would it mean if it said ERROR: column "c" does not exist LINE 1?
– User
Oct 4 '15 at 17:36
16
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Declaring Multiple Variables in JavaScript
...ingle line or statement to make quickly understanding code harder and more error prone.
– ogradyjd
Sep 3 '13 at 11:51
9
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How to watch for array changes?
... eventName).toLowerCase();
if (!(eventName in _handlers)) throw new Error("Invalid event name.");
if (typeof handler !== "function") throw new Error("Invalid handler.");
_handlers[eventName].push(handler);
}
});
Object.defineProperty(_self, "removeEventListener", {
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How can I format a decimal to always show 2 decimal places?
...y, wrapping num in a tuple is a coding convention to prevent a duck typing error on arguments during string formatting. It doesn't have any effect in this case with a float conversion, but it prevents an unexpected type error when converting to strings. Consider r = 1; "%s" % r; r = (1, 2); "%s" %...
How to drop columns using Rails migration
...table_name, :column_name, :column_type. Otherwise you'll get the following error when trying to run the migration: remove_column is only reversible if given a type
– Dennis
Mar 26 '14 at 13:35
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Why doesn't Dijkstra's algorithm work for negative weight edges?
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Sorry but I'm not getting any error. First A->B will 5 and A->C will 2. Then B->C will -5. So the value of C will be -5 same as bellman-ford. How is this not giving the right answer?
– Anirban Nag 'tintinmj'
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How do I get Flask to run on port 80?
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So it's throwing up that error message because you have apache2 running on port 80.
If this is for development, I would just leave it as it is on port 5000.
If it's for production either:
Not Recommended
Stop apache2 first;
Not recommended as...
How to post pictures to instagram using API
...nts/login/', true, $data, $agent, false);
if(strpos($login[1], "Sorry, an error occurred while processing this request.")) {
echo "Request failed, there's a chance that this proxy/ip is blocked";
} else {
if(empty($login[1])) {
echo "Empty response received from the serv...
Android Crop Center of Bitmap
... targeted width
height targeted height
I was getting out of memory errors sometimes when using the accepted answer, and using ThumbnailUtils resolved those issues for me. Plus, this is much cleaner and more reusable.
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How do you debug MySQL stored procedures?
...oesn't seem to work for FUNCTIONS and I have no idea why. It always gives "Error Code: 1415. Not allowed to return a result set from a function". Is there any recourse?
– Patrick M
Jul 28 '15 at 21:29
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