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Surrogate vs. natural/business keys [closed]
...al about a primary key, except that it is labelled as such. It is nothing more than a NOT NULL UNIQUE constraint, and a table can have more than one.
If you use a surrogate key, you still want a business key to ensure uniqueness according to the business rules.
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How to check whether a string is Base64 encoded or not
...th '=' characters.
^([A-Za-z0-9+/]{4})* means the string starts with 0 or more base64 groups.
([A-Za-z0-9+/]{4}|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{2}==)$ means the string ends in one of three forms: [A-Za-z0-9+/]{4}, [A-Za-z0-9+/]{3}= or [A-Za-z0-9+/]{2}==.
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Checking if a field contains a string
...ld and you have a large number of documents, I would tokenize the text for more efficient queries. You could use multikeys for a simple full-text search, or perhaps build an inverted index as a separate collection. For infrequent searches or a small collection of documents, scanning the full index...
MySQL: multiple tables or one table with many columns?
So this is more of a design question.
8 Answers
8
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XmlSerializer giving FileNotFoundException at constructor
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I think Hans' suggestion below is more valuable - use a different method call that does not produce this exception at all: XmlSerializer serializer = XmlSerializer.FromTypes(new[] { typeof(MyType) })[0];
– bright
Jun 9 '...
Renaming the current file in Vim
... @AaronMahan I've fixed Rename2.vim (disregarding the smarter but more complex DelvarWorld version) to allow for spaces in paths and forked it here: github.com/aehlke/vim-rename3 Feel free to submit pull requests for even smarter functionality!
– aehlke
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Peak memory usage of a linux/unix process
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"VmHWM: Peak resident set size" might be more usable to measure RAM usage (instead of VmPeak that includes a lot of other things too).
– jfs
Feb 26 '19 at 6:29
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More lines in command window
Is there a possibility to get "more" lines into the command window (Console)?
3 Answers
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What are the pros and cons to keeping SQL in Stored Procs versus Code [closed]
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I am not a fan of stored procedures
Stored Procedures are MORE maintainable because:
* You don't have to recompile your C# app whenever you want to change some SQL
You'll end up recompiling it anyway when datatypes change, or you want to return an extra column, or whatever. T...
Generate a Hash from string in Javascript
...n jsperf (jsperf.com/hashing-strings) and the bitwise function is actually more slow than the number based function.
– skerit
Jun 29 '12 at 21:23
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