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What is the purpose of “!” and “?” at the end of method names?

...throw. Instead you must clone it before doing the concat. Fortunately my test suite caught this one, but.. heads up! share | improve this answer | follow | ...
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Good or bad practice? Initializing objects in getter

...Modern computers have way enough memory. Without a case of actual problems confirmed by a profiler, this is pre-mature optimization and there are good reasons against it. I acknowledge the fact that sometimes this kind of optimization is justified. But even in these cases lazy initialization doesn't...
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jQuery map vs. each

... @Hemant Just tested the fiddle in Chrome and it seems to work fine. There are three alert dialogs ('lions!', 'tigers!', 'bears!') and at the end result === ['lions', 'tigers', 'bears'] – Patrick McElhaney ...
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How to make graphics with transparent background in R using ggplot2?

... fill = "transparent" # for the inside of the boxplot ) Fastest way is using using rect, as all the rectangle elements inherit from rect: p <- p + theme( rect = element_rect(fill = "transparent") # all rectangles ) p More controlled way is to use options of ...
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ElasticSearch - Return Unique Values

...h with high-cardinality datasets, but it's generally pretty accurate in my testing. You can also tune the accuracy with the precision_threshold parameter. The trade-off, or course, is memory usage. This graph from the docs shows how a higher precision_threshold leads to much more accurate results....
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Using Mockito's generic “any()” method

... As I needed to use this feature for my latest project (at one point we updated from 1.10.19), just to keep the users (that are already using the mockito-core version 2.1.0 or greater) up to date, the static methods from the above answers should be taken from Argumen...
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How to exit pdb and allow program to continue?

... Num Type Disp Enb Where 1 breakpoint keep yes at /path/to/test.py:5 (Pdb) clear 1 Deleted breakpoint 1 (Pdb) continue Or, if you're using pdb.set_trace(), you can try this (although if you're using pdb in more fancy ways, this may break things...) (Pdb) pdb.set_trace = lambda: No...
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How to declare constant map

... (TestMostSoldRecommender?) – twotwotwo Dec 13 '14 at 9:00 1 ...
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.rar, .zip files MIME Type

... name too. Here is how you could check if the file is a RAR or ZIP file. I tested it by creating a quick command line application. <?php if (isRarOrZip($argv[1])) { echo 'It is probably a RAR or ZIP file.'; } else { echo 'It is probably not a RAR or ZIP file.'; } function isRarOrZip($f...
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Modify SVG fill color when being served as Background-Image

Placing the SVG output directly inline with the page code I am able to simply modify fill colors with CSS like so: 16 Answe...