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What is the purpose of Flask's context stacks?
... knows about the app application, but during create_all() it will throw an error complaining about there not being an application context. This error is justified; you never told Flask what application it should be dealing with when running the create_all method.
You might be wondering why you don'...
c# why can't a nullable int be assigned null as a value [duplicate]
...
Did you actually try this? It should give the error "Cannot implicitly convert type 'object' to 'int?'. An explicit conversion exists (are you missing a cast?)"
– Ben Voigt
Sep 7 '16 at 18:01
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Create boolean column in MySQL with false as default value?
... "Successful" and "true" are completely orthogonal things. Error codes are not booleans.
– Matthew Read
May 16 '18 at 18:19
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What's the difference between `=` and `
... if (x[1]=-2) is conveniently prohibited to prevent this kind of error. Specifically, the operator = is only allowed at the top level.
– Aaron left Stack Overflow
Mar 14 '11 at 13:56
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What do column flags mean in MySQL Workbench?
.... Any attempt to add a duplicate will result in an unique data constraint error. The unique constraint as supports covering more than one column - this is called a composite.
– OMG Ponies
Sep 8 '10 at 1:38
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How to overwrite existing files in batch?
... use a trailing slash for the target path, otherwise it will give error if target folder doesnt exist
– Code Name Jack
Nov 26 '18 at 8:07
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In Ruby, how do I skip a loop in a .each loop, similar to 'continue' [duplicate]
...est def, and never a block; if there's no surrounding def, returning is an error.
Using return from within a block intentionally can be confusing. For instance:
def my_fun
[1, 2, 3].map do |e|
return "Hello." if e == 2
e
end
end
my_fun will result in "Hello.", not [1, "Hello.", 2], ...
Convert all strings in a list to int
...nteger only if the given string is entirely composed of numbers or else an error will be generated.
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How to upgrade R in ubuntu? [closed]
...ing (eg, trusty/, xenial/, and so on). If you're getting a "Malformed line error", check to see if you have a space between /ubuntu/ and version/.
Fetch the secure APT key:
gpg --keyserver keyserver.ubuntu.com --recv-key E084DAB9
or
gpg --hkp://keyserver keyserver.ubuntu.com:80 --recv-key E084DA...
Why aren't my ball (objects) shrinking/disappearing?
...e asplode because it is not inside shrink. (In your console, you'll see an error like: Uncaught ReferenceError: asplode is not defined.)
You might first try instead moving asplode outside of shrink:
var shrink = function(p) {
for (var i = 0; i < 100; i++) {
p.radius -= 1;
}
}
...