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What is the difference between buffer and cache memory in Linux?

...ed (thus the total page cache size is Cached + SwapCached). Linux performs all file I/O through the page cache. Writes are implemented as simply marking as dirty the corresponding pages in the page cache; the flusher threads then periodically write back to disk any dirty pages. Reads are implemented...
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How can I manipulate the strip text of facet_grid plots?

...ts. My question is similar to a question on plot titles , but I'm specifically concerned with manipulating not the plot title but the text that appears in facet titles (strip_h). ...
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How do I check if file exists in jQuery or pure JavaScript?

...n('HEAD', url, false); http.send(); return http.status!=404; } Small changes and it could check for status HTTP status code 200 (success), instead. EDIT 2: Since sync XMLHttpRequest is deprecated, you can add a utility method like this to do it async: function executeIfFileExist(src, cal...
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How to solve javax.net.ssl.SSLHandshakeException Error?

...grated PayPal with my application for make Express checkout when I make a call for payment I'm facing this error. I use servlet for back-end process. Can any one say how to fix this issue? ...
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is there a post render callback for Angular JS directive?

...s not a result of Angular but rather the browser. $timeout(fn) ultimately calls setTimeout(fn, 0) which has the effect interrupting the Javascript execution and allowing the browser to render the content first, before continuing the execution of that Javascript. – parliament ...
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MySQL CONCAT returns NULL if any field contain NULL

...es: it returns the first non-NULL value parameter passed to it (or NULL if all parameters are NULL). By passing an empty string as the second parameter, you are guaranteeing it will not return NULL. – Jo. Mar 10 '17 at 17:03 ...
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Is Safari on iOS 6 caching $.ajax results?

...S 6, we are seeing Safari's web view take the liberty of caching $.ajax calls. This is in the context of a PhoneGap application so it is using the Safari WebView. Our $.ajax calls are POST methods and we have cache set to false {cache:false} , but still this is happening. We tried manually ad...
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How can I make a Python script standalone executable to run without ANY dependency?

...'m building a Python application and don't want to force my clients to install Python and modules. 19 Answers ...
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Is it .yaml or .yml?

...ruling as you can get, but the habit of 8.3 is hard to get out of (and, appallingly, still occasionally relevant in 2013). share | improve this answer | follow ...
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Build vs new in Rails 3

...ng a new Client object from the clients collection, and so it can automatically set the firm_id to some_firm.id, whereas the docs are calling Client.new which has no knowledge of any Firm's id at all, so it needs the firm_id passed to it. The only difference between some_firm.clients.new and some_f...