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How to check if object (variable) is defined in R?

... what you want. – CousinCocaine Jan 27 '14 at 14:31 2 Might get a bit trickier if checking for li...
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How does a Linux/Unix Bash script know its own PID?

... | edited Jan 27 '19 at 17:33 Bruno Bronosky 49.3k99 gold badges122122 silver badges111111 bronze badges ...
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What is %2C in a URL?

... 65 | e | | 06 | ACK | 26 | & | 46 | F | 66 | f | | 07 | BEL | 27 | ' | 47 | G | 67 | g | | 08 | BS | 28 | ( | 48 | H | 68 | h | | 09 | TAB | 29 | ) | 49 | I | 69 | i | | 0A | LF | 2A | * | 4A | J | 6A | j | | 0B | VT | 2B | + | 4B | K | 6B | k | | 0C | F...
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Chaining multiple filter() in Django, is this a bug?

... | edited Sep 23 at 7:27 DeyaEldeen 6,27288 gold badges2828 silver badges6464 bronze badges answered...
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How to convert a private key to an RSA private key?

... | edited Jun 27 '17 at 8:39 answered May 27 '16 at 12:41 ...
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Set initial focus in an Android application

...iasMatthias 40.8k2828 gold badges9898 silver badges127127 bronze badges ...
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Why is parenthesis in print voluntary in Python 2.7?

...lDon O'Donnell 4,00033 gold badges2222 silver badges2727 bronze badges ...
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Java: Literal percent sign in printf statement

... | edited Oct 27 '18 at 13:53 Jakub Kukul 5,49311 gold badge3131 silver badges3535 bronze badges ...
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Ruby on Rails: getting the max value from a DB column

... 274 Assuming your model name is Bar and it has a column named bar, this should work: Bar.maximum(...
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Simulate first call fails, second call succeeds

... | edited Nov 27 '17 at 1:21 Charney Kaye 2,87233 gold badges2626 silver badges3838 bronze badges ...