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If table exists drop table then create it, if it does not exist just create it
...ks for a list of tables or views! DROP TABLE IF EXISTS 'table1', 'table2'; and DROP VIEW IF EXISTS 'view1', 'view2'; PS- What witchcraft did you use to have `s in inline code!?
– Campbeln
Mar 3 '16 at 23:32
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How does node.bcrypt.js compare hashed and plaintext passwords without the salt?
...(as plaintext). The compare function simply pulls the salt out of the hash and then uses it to hash the password and perform the comparison.
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Jquery selector input[type=text]')
... answered May 18 '12 at 9:16
Andreas WongAndreas Wong
53.4k1818 gold badges9898 silver badges118118 bronze badges
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Why #egg=foo when pip-installing from git repo
... Aug 6 '12 at 20:31
Skylar SavelandSkylar Saveland
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Importing a Swift protocol in Objective-C class
...however, you can add the protocol to the private @interface in the .m file and it fixes things (at least it has for me on occasion). So above your @implementation have @interface MyController() <AnalyticProtocol>.
– Adam
Oct 5 '15 at 19:36
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jQuery: checking if the value of a field is null (empty)
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@Pispirulito: I don't think so, and I don't think that it will be changed. A select without any option elements is not something that you normally have. It's pretty useless.
– Guffa
Jan 30 '14 at 21:22
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When do you need to explicitly call a superclass constructor?
...Well there's a difference between requiring the constructor to be present, and requiring an explicit delegation to the parameterless super-constructor. The latter is a matter of style - whether you prefer to be explicit/obvious or brief.
– Jon Skeet
Dec 11 '17 ...
How to branch with TortoiseHG
...he life of me I can't figure out how to make a branch. It seems to understand branches (e.g. in its repository browser) but I just can't seem to find a way to make a branch. This seems like such a fundamental capability since out of the often touted benefits of DVC is the lightweight branching.
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How do I convert struct System.Byte byte[] to a System.IO.Stream object in C#?
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This is the best answer. It's concise and covers all the practical applications. There's a gotcha with just using the byte array based constructor as indicated here--the resulting stream is not re-sizable.
– Jduv
Jul 19 '12 ...
Cost of len() function
...ength of the element - very fast) on every type you've mentioned, plus set and others such as array.array.
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