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How to check whether a string is Base64 encoded or not
... it in my database. If the input is not Base64 encoded, I need to throw an error.
20 Answers
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What do
...ther than a String:
scala> Foo(123).getStringLength
<console>:9: error: could not find implicit value for parameter evidence: =:=[Int,String]
You can read that error as "could not find evidence that Int == String"... that's as it should be! getStringLength is imposing further restriction...
How to save an HTML5 Canvas as an image on a server?
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I get an error on Web Console. [16:53:43.227] SecurityError: The operation is insecure. @ sharevi.com/staging/canvas.html:43 the This connection is insecure. Is there something that needs to be done?/// UPDATE I think i know why, i wa...
How to install the current version of Go in Ubuntu Precise
...rsion to check the current version installed
Start programming.
Possible errors + fixes: (to be updated)
If you get a go version xgcc (Ubuntu 4.9.1-0ubuntu1) 4.9.1 linux/amd64 then you did something wrong, so check out this post: Go is printing xgcc version but not go installed version
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What's so bad about Template Haskell?
...u can't typecheck TH to be that worrying. Why? Because even if there is an error, it will still be compile time. I'm not sure if this strengthens my argument, but this is similar in spirit to the errors that you receive when using templates in C++. I think these errors are more understandable than C...
WPF: Setting the Width (and Height) as a Percentage Value
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I already tried that, but I'm getting this error: '2*' string cannot be converted to Length.'
– Andreas Grech
Apr 4 '09 at 16:06
6
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numpy: most efficient frequency counts for unique values in an array
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If you get the error: TypeError: unique() got an unexpected keyword argument 'return_counts', just do: unique, counts = np.unique(x, True)
– NumesSanguis
Dec 2 '14 at 14:10
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How to name and retrieve a stash by name in git?
... FWIW: When runninggit stash apply stash@{1} in Powershell you will get a error: unknown switch 'e' back. Instead use git stash apply --index 1 or git stash apply 'stash@{1}' or escape } and { with a backtick `.
– LosManos
May 26 at 6:59
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Can I use CASE statement in a JOIN condition?
...the join condition as you are doing.. Check the
query above that have no error. I have take out the common column up
and the right column value will be evaluated on condition.
share
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improve t...
Add timestamps to an existing table
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Running this migration leads to error PG::NotNullViolation: ERROR: column "created_at" contains null value because my table already contains data which violates not null constraint. Any better way of doing this than removing the not null contraint at ...