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Update or Insert (multiple rows and columns) from subquery in PostgreSQL
... perfect. this works best wherein you need to pick a subset based on a condition involving the updated table itself.
– mythicalcoder
Dec 28 '17 at 9:06
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Detecting iOS / Android Operating system
...erating system (Apple/Android/Other[not supported]) and modify my elements based on that value.
9 Answers
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How to efficiently count the number of keys/properties of an object in JavaScript?
...able
Cons - Memory overhead due to the creation of the array.
2. Library-based solutions
Many library-based examples elsewhere in this topic are useful idioms in the context of their library. From a performance viewpoint, however, there is nothing to gain compared to a perfect no-library code sin...
How to use UTF-8 in resource properties with ResourceBundle
...is already automatically done when you create a .properties file in a Java based project and use Eclipse's own editor. Eclipse will transparently convert the characters beyond ISO-8859-1 range to \uXXXX format. See also below screenshots (note the "Properties" and "Source" tabs on bottom, click for ...
bash: mkvirtualenv: command not found
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This answer was based on installing virtualenvwrapper with pip, which is what I prefer doing.
– Mike Pennington
Jul 31 '16 at 20:43
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Check if a class is derived from a generic class
...ric == cur) {
return true;
}
toCheck = toCheck.BaseType;
}
return false;
}
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Hiding the scroll bar on an HTML page
... defaults and can be replaced by hexadecimal color values */
scrollbar-base-color: aqua;
scrollbar-face-color: ThreeDFace;
scrollbar-highlight-color: ThreeDHighlight;
scrollbar-3dlight-color: ThreeDLightShadow;
scrollbar-shadow-color: ThreeDDarkShadow;
scrollbar-darkshadow-co...
JNI converting jstring to char *
...StringUTFChars(javaString, nativeString);
Can fix this errors:
1.error: base operand of '->' has non-pointer type 'JNIEnv {aka _JNIEnv}'
2.error: no matching function for call to '_JNIEnv::GetStringUTFChars(JNIEnv*&, _jstring*&, bool)'
3.error: no matching function for call to '_JNIE...
How can I get pg_dump to authenticate properly
....pgpass and neither of these two will allow me to authenticate to the database. I have chmod 'd .pgpass to appropriate permissions and also tried:
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How to use a variable to specify column name in ggplot
...string that the variable contains, using sym()(which is almost the same as base aliases as.name() / as.symbol()), and unquote it using !!
Simulating OP's data we can do :
library(tidyverse)
rates.by.groups <- data.frame(
name = LETTERS[1:3],
rate = 1:3,
mjr = LETTERS[c(4,4,5)],
gender =...