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What's the difference between Cache-Control: max-age=0 and no-cache?

...hahkalpesh's answer applies to the user agent side. You can also look at 13.2.6 Disambiguating Multiple Responses. If a user agent sends a request with Cache-Control: max-age=0 (aka. "end-to-end revalidation"), then each cache along the way will revalidate its cache entry (eg. with the If-Not-Modi...
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What does character set and collation mean exactly?

...', 'b'. We give each letter a number: 'A' = 0, 'B' = 1, 'a' = 2, 'b' = 3. The letter 'A' is a symbol, the number 0 is the encoding for 'A', and the combination of all four letters and their encodings is a character set. Now, suppose that we want to compare two string values, 'A' a...
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How do I parse a string to a float or int?

...2222" to its corresponding float value, 545.2222 ? Or parse the string "31" to an integer, 31 ? 28 Answers ...
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Programmatically find the number of cores on a machine

... more of the following methods (guarded by appropriate #ifdef lines): Win32 SYSTEM_INFO sysinfo; GetSystemInfo(&sysinfo); int numCPU = sysinfo.dwNumberOfProcessors; Linux, Solaris, AIX and Mac OS X >=10.4 (i.e. Tiger onwards) int numCPU = sysconf(_SC_NPROCESSORS_ONLN); FreeBSD, MacOS X,...
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What's a simple way to get a text input popup dialog box on an iPhone

... WarkstWarkst 4,71433 gold badges2828 silver badges3939 bronze badges ...
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How do I insert a linebreak where the cursor is without entering into insert mode in Vim?

... Alex 8,62611 gold badge3333 silver badges4242 bronze badges answered Oct 26 '08 at 2:11 Greg HewgillGreg Hewgill ...
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How do I replace all line breaks in a string with elements?

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SHA-1 fingerprint of keystore certificate

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Aliases in Windows command prompt

... 463 To add to josh's answer, you may make the alias(es) persistent with the following steps, Crea...
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C pointers : pointing to an array of fixed size

...alizing it, hiding the array type behind a typedef name typedef int Vector3d[3]; void transform(Vector3d *vector); /* equivalent to `void transform(int (*vector)[3])` */ ... Vector3d vec; ... transform(&vec); Note additionally that the above code is invariant with relation to Vector3d type b...