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Efficient SQL test query or validation query that will work across all (or most) databases
... should be more efficient to use select count(1) because * can cause it to read all the column data.
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How do I install jmeter on a Mac?
...update to update homebrew packages
brew install jmeter to install jmeter
Read this blog to know how to map folders from standard jmeter to homebrew installed version.
Install using standard version which I would advise you to do. Steps are:
Install Last compatible JDK version (7 or 8 as of JMe...
jQuery text() and newlines
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Some people reading this answer are likely to not know how dangerous this is. Never use this solution with user-supplied text. Peter Mørch's solution is preferable.
– Andrew B.
May 30 '12 at 22:02
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Remove duplicated rows
I have read a CSV file into an R data.frame. Some of the rows have the same element in one of the columns. I would like to remove rows that are duplicates in that column. For example:
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Convert JSON to Map
...r), you'd do:
Map<String,Object> result =
new ObjectMapper().readValue(JSON_SOURCE, HashMap.class);
(where JSON_SOURCE is a File, input stream, reader, or json content String)
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UITextField border color
...nse to you, I suggest you go to a website, for example Ray Wenderlich, and read some beginner tuts.
– Aleksander
Jan 2 '15 at 14:25
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Echo newline in Bash prints literal \n
... @Okneloper Works just fine for me.
– Matthew Read
Sep 13 '17 at 20:06
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Should I use string.isEmpty() or “”.equals(string)?
... I'd say str.isEmpty() is much more clear than "".equals(str). It reads as what you're checking. Matter of opinion though, I guess.
– ColinD
Jul 23 '10 at 19:14
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Disable LESS-CSS Overwriting calc() [duplicate]
... into the calc was super helpful. The exact follow-on question I had after reading the above accepted answer. ????
– Hynes
Jul 8 '15 at 13:22
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WebClient vs. HttpWebRequest/HttpWebResponse
...ebRequest/Response can also be accomplished with the WebClient class. I read somewhere that WebClient is a high-level wrapper for WebRequest/Response .
So far, I can't see anything that can be accomplished with HttpWebRequest/Response that can not be accomplished with WebClient , nor whe...