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Storing SHA1 hash values in MySQL

... character, you would only need a 160/8 = 20 character long field. So I recommend you to use BINARY(20) and the UNHEX function to convert the SHA1 value to binary. I compared storage requirements for BINARY(20) and CHAR(40). CREATE TABLE `binary` ( `id` int unsigned auto_increment primary key...
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How to get a list of installed android applications and pick one to run

...y about the my app reading and storing a list of all apps, and potentially communicating with a server. Is there any guidelines? – dowjones123 Jun 30 '15 at 20:07 1 ...
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Bower: ENOGIT Git is not installed or not in the PATH

.... Open the Windows Environment Variables/Path Window. Right-click on My Computer -> Properties Click Advanced System Settings link from the left side column Click Environment Variables in the bottom of the window Then under System Variables look for the path variable and click edit Add the pwd...
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Is it safe to get values from a java.util.HashMap from multiple threads (no modification)?

...onsumption). Conveniently, there are only a few easy-to-remember ways to accomplish that[1]: Exchange the reference through a properly locked field (JLS 17.4.5) Use static initializer to do the initializing stores (JLS 12.4) Exchange the reference via a volatile field (JLS 17.4.5), or as the conse...
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Bogus foreign key constraint fail

... add a comment  |  121 ...
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What is the difference between a process and a thread?

...ra bits carried around with the instruction through the pipelines,and more complex bypassing/forwarding logic,among other things. – Matt J Mar 6 '09 at 6:10 5 ...
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Exec : display stdout “live”

...toString()); }); exec buffers the output and usually returns it when the command has finished executing. share | improve this answer | follow | ...
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Paste text on Android Emulator

... @mhsmith How do you do that (reset clipboard sharing) from the command line with Android command line tools or via editing the ~/.android/avd/ .ini files? – Chloe Jan 15 '18 at 18:53 ...
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When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?

I know that the compiler will sometimes initialize memory with certain patterns such as 0xCD and 0xDD . What I want to know is when and why this happens. ...
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Perform debounce in React.js

... the async function use-constant to store that debounced function into the component react-async-hook to get the result into my component This is some initial wiring but you are composing primitive blocks on your own, and you can make your own custom hook so that you only need to do this once. //...