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R: += (plus equals) and ++ (plus plus) equivalent from c++/c#/java, etc.?
...ylittlescripts.blogspot.com/2018/09/make-your-r-code-nicer-with-roperators.html
install.packages('roperators')
require(roperators)
x <- 1:3
x %+=% 1; x
x %-=% 3; x
y <- c('a', 'b', 'c')
y %+=% 'text'; y
y %-=% 'text'; y
# etc
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How to simulate the environment cron executes a script with?
...m http://matthew.mceachen.us/blog/howto-simulate-the-cron-environment-1018.html
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How do you remove Subversion control for a folder?
...files.
http://tortoisesvn.net/docs/release/TortoiseSVN_en/tsvn-dug-export.html#tsvn-dug-export-unversion
Updated Answer for Subversion 1.7:
In Subversion 1.7 the working copy has been revised extensively. There is only one .svn folder, located in the base of the working copy. If you are using 1.7,...
Uses of Action delegate in C# [closed]
...lymorphism". refactoring.com/catalog/replaceConditionalWithPolymorphism.html
– David Robbins
Oct 18 '09 at 19:39
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How do I clear all options in a dropdown box?
...
To remove the options of an HTML element of select, you can utilize the remove() method:
function removeOptions(selectElement) {
var i, L = selectElement.options.length - 1;
for(i = L; i >= 0; i--) {
selectElement.remove(i);
}
}
// u...
How to set background color of a View
... patch bitmaps (developer.android.com/reference/android/graphics/NinePatch.html) were new to me. I simply want to change the color of anything on the screen when I press a Button. The Buttons are on a TextView. Trying to change the color of that, leads to console messages "DDM dispatch reg wait t...
jQuery get selected option value (not the text, but the attribute 'value')
...t option:selected').val() will take the value of the first selector in the HTML code. Whereas with $('#selectorId option:selected').val() you can have the value of the selector which id you specified. Double check for typos. Here is an example that shows what I just said: codepen.io/anon/pen/Nqgqyz
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How to include jar files with java file and compile in command prompt
...log.
http://javarevisited.blogspot.com/2011/01/how-classpath-work-in-java.html
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How do I check that a Java String is not all whitespaces?
...per/commons-lang/javadocs/api-release/org/apache/commons/lang3/StringUtils.html#isBlank-java.lang.CharSequence-
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How to do 3 table JOIN in UPDATE query?
...he syntax. According to the manual [dev.mysql.com/doc/refman/5.6/en/update.html], the query should be: UPDATE TABLE_A, TABLE_B SET TABLE_A.column_c = TABLE_A.column_c +1 WHERE TABLE_A.join_col = TABLE_B.join_col
– Noe Nieto
Jun 23 '15 at 1:47
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