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Is there a standard function to check for null, undefined, or blank variables in JavaScript?
...n the specification at the ToBoolean section.
Furthermore, if you do not know whether a variable exists (that means, if it was declared) you should check with the typeof operator. For instance
if( typeof foo !== 'undefined' ) {
// foo could get resolved and it's defined
}
If you can be sure ...
How do I find the location of the executable in C? [duplicate]
...me/where/else/foo # create a hard link to foo
$ /some/where/else/foo
Now, the approach above (including, I suspect, /proc/$pid/exe) will give /some/where/else/foo as the real path to the program. And, in fact, it is a real path to the program, just not the one you wanted. Note that this prob...
How can I make Flexbox children 100% height of their parent?
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I have answered a similar question here.
I know you have already said position: absolute; is inconvenient, but it works. See below for further information on fixing the resize issue.
Also see this jsFiddle for a demo, although I have only added WebKit prefixes so open ...
Call apply-like function on each row of dataframe with multiple arguments from each row
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thanks @agstudy, that worked! do you know if there is any way to specify the args by name instead of by index? so, for testFunc, something like apply(dat[,c('x','z')], 1, [pseudocode] testFunc(a=x, b=y))? the reason is that I am calling power.t.test in this ma...
POST unchecked HTML checkboxes
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Now that I re-read the question it seems this wasn't really what you wanted. However I got to this question when I was trying to figure out this answer so maybe it could be useful to someone else.
– Sam...
File inside jar is not visible for spring
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I know this question has already been answered. However, for those using spring boot, this link helped me - https://smarterco.de/java-load-file-classpath-spring-boot/
However, the resourceLoader.getResource("classpath:file.txt")...
How do I 'svn add' all unversioned files to SVN?
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@Nux Only now after all these years do I finally see what you were getting at :) In the command the dot is the path that specifies the current directory. Naturally any valid alternative can be supplied instead.
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Install shows error in console: INSTALL FAILED CONFLICTING PROVIDER
...month to fully transition a very large project from Eclipse to Studio, and now we're penalized with 4+ minute build time, compared to 10-15 seconds in Eclipse.
– DiscDev
Feb 29 '16 at 22:14
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How to create our own Listener interface in android?
...g reference to the MyButton... is java garbage collector clever enough to know that both the listener and the MyButton should be cleaned up if there are no references to the listener left other than from the MyButton? You could use a WeakReference<> in this case, but then you cant make the lis...
Java Hashmap: How to get key from value?
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Apache Collections now supports generics commons.apache.org/proper/commons-collections/javadocs/…
– kervin
May 31 '15 at 16:28
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