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How do I update if exists, insert if not (AKA “upsert” or “merge”) in MySQL?

... | edited Jul 15 at 20:25 answered Aug 2 '09 at 13:35 ...
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Multiple dex files define Landroid/support/v4/accessibilityservice/AccessibilityServiceInfoCompat

... 305 Run gradle -q dependencies (or gradle -q :projectName:dependencies) to generate a dependency re...
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Convert a row of a data frame to vector

... | edited Oct 30 '19 at 16:15 answered Jan 23 '13 at 16:42 ...
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ASP.NET Identity's default Password Hasher - How does it work and is it secure?

... } using (Rfc2898DeriveBytes bytes = new Rfc2898DeriveBytes(password, 0x10, 0x3e8)) { salt = bytes.Salt; buffer2 = bytes.GetBytes(0x20); } byte[] dst = new byte[0x31]; Buffer.BlockCopy(salt, 0, dst, 1, 0x10); Buffer.BlockCopy(buffer2, 0, dst, 0x11, 0x20); ...
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How to calculate date difference in JavaScript?

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How to prevent a background process from being stopped after closing SSH client in Linux

... 20 Answers 20 Active ...
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What do 'real', 'user' and 'sys' mean in the output of time(1)?

... 2130 Real, User and Sys process time statistics One of these things is not like the other. Real ref...
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C# equivalent to Java's charAt()?

... 201 You can index into a string in C# like an array, and you get the character at that index. Exam...
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memory_get_peak_usage() with “real usage”

... +400 Ok, lets test this using a simple script: ini_set('memory_limit', '1M'); $x = ''; while(true) { echo "not real: ".(memory_get_peak...
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Further understanding setRetainInstance(true)

...w. (This is edited a bit to make it easier to read.) TestActivity@415a4a30: this() TestActivity@415a4a30: onCreate() TestActivity@415a4a30: Existing fragment not found. TestFragment{41583008}: this() TestFragment{41583008} TestFragment{41583008}: onAttach(TestActivity@415a4a30) TestFragment{415830...