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How to join int[] to a character separated string in .NET?
...formance. Join method needs to know the size of the data to effectively preallocate necessary amount of memory.
Here is a part of internal implementation of String.Join method:
// length computed from length of items in input array and length of separator
string str = FastAllocateString(length);
f...
What is the proper way to check for null values?
...ast because I think it's likely to surface errors faster. It also avoids calling ToString() on a string object.
– tvanfosson
Mar 20 '12 at 19:17
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Difference between $.ajax() and $.get() and $.load()
...imes very useful. You have to deal with the returned data yourself with a callback.
$.get() is just a shorthand for $.ajax() but abstracts some of the configurations away, setting reasonable default values for what it hides from you. Returns the data to a callback. It only allows GET-requests so is...
SQL standard to escape column names?
...ody> <double quote>
Oracle, PostgreSQL, MySQL, MSSQL and SQlite all support " as the identifier delimiter.
They don't all use " as the 'default'. For example, you have to be running MySQL in ANSI mode and SQL Server only supports it when QUOTED_IDENTIFIER is ON.
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Rails migration for has_and_belongs_to_many join table
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This is the only reply that actually answers the question.
– pingu
Aug 17 '12 at 10:57
8
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Reverse / invert a dictionary mapping
...
For Python 2.7.x
inv_map = {v: k for k, v in my_map.iteritems()}
For Python 3+:
inv_map = {v: k for k, v in my_map.items()}
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What is the difference between Collections.emptyList() and Collections.EMPTY_LIST
...000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 4...
Locate the nginx.conf file my nginx is actually using
...g on a client's server where there are two different versions of nginx installed. I think one of them was installed with the brew package manager (its an osx box) and the other seems to have been compiled and installed with the nginx packaged Makefile. I searched for all of the nginx.conf files on t...
C# generic list how to get the type of T? [duplicate]
...Type(), out innerType).Dump();
innerType.Dump();
Returns
True
typeof(Int32)
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Rails has_and_belongs_to_many migration
...000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 4...