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#1071 - Specified key was too long; max key length is 1000 bytes
...tle have been answered before, but please do read on. I've read thoroughly all the other questions/answers on this error before posting.
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LINQ Ring: Any() vs Contains() for Huge Collections
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Does Any() perform the operation on all objects in the collection or does it terminate with the first match?
– Quarkly
Feb 14 '19 at 18:02
1
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Remove blank lines with grep
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Try the following:
grep -v -e '^$' foo.txt
The -e option allows regex patterns for matching.
The single quotes around ^$ makes it work for Cshell. Other shells will be happy with either single or double quotes.
UPDATE: This works for me for a file with blank lines or "all white ...
Naming returned columns in Pandas aggregate function? [duplicate]
...er, this does not work with lambda functions, since they are anonymous and all return <lambda>, which causes a name collision:
>>> df.groupby('A').agg({'B': [lambda x: x.min(), lambda x: x.max]})
SpecificationError: Function names must be unique, found multiple named <lambda>
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Is there a “goto” statement in bash?
...atement in bash ? I know It is considered bad practice, but I need specifically "goto".
12 Answers
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Cost of exception handlers in Python
...faster than an explicit if as long as the condition is not met.
But it's all within the same order of magnitude and unlikely to matter either way. Only if the condition is actually met, then the if version is significantly faster.
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How do I set the request timeout for one controller action in an asp.net mvc application
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You can set this programmatically in the controller:-
HttpContext.Current.Server.ScriptTimeout = 300;
Sets the timeout to 5 minutes instead of the default 110 seconds (what an odd default?)
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Why is char[] preferred over String for passwords?
... believe this is implementation-specific - the garbage collector may clear all memory as it goes, to avoid this sort of thing. Even if it does, there's still the time during which the char[] contains the actual characters as an attack window.
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Is a `=default` move constructor equivalent to a member-wise move constructor?
... decl-specifier-seqopt declarator virt-specifier-seqopt = default ;
is called an explicitly-defaulted definition. A function that is explicitly defaulted shall
be a special member function,
have the same declared function type (except for possibly differing ref-qualifiers and except that in the...
How to check if an object is an array?
... {
Array.isArray = function(obj) {
return Object.prototype.toString.call(obj) === '[object Array]';
}
};
If you use jQuery you can use jQuery.isArray(obj) or $.isArray(obj). If you use underscore you can use _.isArray(obj)
If you don't need to detect arrays created in different frames you...