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The Concept of 'Hold space' and 'Pattern space' in sed

... line. So what happens is this: first line is read and inserted automatically into the pattern space on the first line, first command is not executed; h copies the first line into the hold space. now the second line replaces whatever was in the pattern space on the second line, first we execute G,...
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Proper way to exit iPhone application?

... it to exit due to certain user actions. After cleaning up memory the app allocated, what's the appropriate method to call to terminate the application? ...
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JavaScript open in a new window, not tab

I have a select box that calls window.open(url) when an item is selected. Firefox will open the page in a new tab by default. However, I would like the page to open in a new window, not a new tab. ...
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Force browser to download image files on click

... Not fully supported in all browsers yet but it's a good solution if you don't care about IE or Safari. caniuse.com/#feat=download – stacigh Sep 23 '14 at 18:41 ...
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jQuery date/time picker [closed]

...ittle over then a little under) and I end up typing it. A keyboard is normally the easiest way to enter a precise numerical value. If you want a visual input method, a clock is the normal one for time, not a slider. Harder to implement, but might actually be useful (as long as keyboard input is a...
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CRON job to run on the last day of the month

... if that's a problem, you'll need to find another way. However, it's usually both substantially easier and correct to run the job as soon as possible on the first day of each month, with something like: 0 0 1 * * myjob.sh and modify the script to process the previous month's data. This remove...
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How to convert JSON data into a Python object

...ry, the order of items will directly correspond.". Good to know for such small, local code blocks. I'd add a comment though to explicitly alert maintainers of code of such a dependency. – cfi Jun 1 '16 at 7:33 ...
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Comparison of full text search engine - Lucene, Sphinx, Postgresql, MySQL?

...ve' (for example) would be considered the same in searches. Sphinx doesn't allow partial index updates for field data though. The common approach to this is to maintain a delta index with all the recent changes, and re-index this after every change (and those new results appear within a second or tw...
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C++ code file extension? .cc vs .cpp [closed]

... When one considers that the compiler is not typically the only tool involved -- almost always, there is "make" or a similar utility that WILL care which extensions you use, for build rules matching -- then this answer really does not address the core concerns of the questio...
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What is the difference between lemmatization vs stemming?

... and lemmatization is to reduce inflectional forms and sometimes derivationally related forms of a word to a common base form. However, the two words differ in their flavor. Stemming usually refers to a crude heuristic process that chops off the ends of words in the hope of achieving this goal corre...