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What does template mean?
...
I got error when using enum as parameter. <Non-type template argument is not a constant expression>. The possible value of enum is finite, is there any way to make it work.
– iaomw
Sep 6...
Rails 4 multiple image or file upload using carrierwave
... from saving. Instead the post is saved, and then the ActiveRecord invalid error is thrown for the attachment model only. I think this is because of the create! method. but using create instead just fails silently. Any idea how to have the validation happen on the post reach into the attachments?
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How to use a switch case 'or' in PHP
...itch:
Example :
switch(true)
{
case (strlen($foo) > 30):
$error = "The value provided is too long.";
$valid = false;
break;
case (!preg_match('/^[A-Z0-9]+$/i', $foo)):
$error = "The value must be alphanumeric.";
$valid = false;
break;
default:
$...
How do I get the logfile from an Android device?
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Often I get the error "logcat read: Invalid argument". I had to clear the log, before reading from the log.
I do like this:
prompt> cd ~/Desktop
prompt> adb logcat -c
prompt> adb logcat | tee log.txt
...
Coalesce function for PHP?
... trying to check if an undefined array element is falsey will result in an error. $input['properties']['range_low'] ?: '?'
– Keyo
Jul 12 '11 at 23:28
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What does send() do in Ruby?
...rs hash (such as 'cylinders'), the code will fail with an undefined method error.
– Kevin Schwerdtfeger
Aug 5 '15 at 12:06
1
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How to find out the MySQL root password
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i can't do this mysql -u root. It shows error Access denied
– Avinash Raj
May 17 '15 at 3:45
4
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ToList()— does it create a new list?
...nment like objectList[0].SimpleInt=5 would not be allowed (C# compile-time error). That is because the return value of the list indexer's get accessor is not a variable (it is a returned copy of a struct value), and therefore setting its member .SimpleInt with an assignment expression is not allowed...
Get MIME type from filename extension
...the future since it's not an agreed upon contract and you'll get a runtime error instead of a compile-time error if that happens. If you are going to do this, you should at least add unit tests for it to be sure to catch it early when upgrading .NET versions. Besides that, if you're going to add m...
Making a request to a RESTful API using python
...[key]
else:
# If response code is not ok (200), print the resulting http error code with description
myResponse.raise_for_status()
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