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Copy a variable's value into another
... the answers are so complex. In Javascript, primitives (strings, numbers, etc) are passed by value, and copied. Objects, including arrays, are passed by reference. In any case, assignment of a new value or object reference to 'a' will not change 'b'. But changing the contents of 'a' will change ...
How to list the properties of a JavaScript object?
... Also check out keys() in the console for Chrome Dev Tools, Firebug, etc.
– Sam Dutton
Sep 17 '11 at 9:59
markca...
Dump a mysql database to a plaintext (CSV) backup from the command line
...tion it'll generate TSV (tab separated) files which can import into Excel, etc, quite easily:
% echo 'SELECT * FROM table' | mysql -B -uxxx -pyyy database
Alternatively, if you've got direct access to the server's file system, use SELECT INTO OUTFILE which can generate real CSV files:
SELECT * I...
M_PI works with math.h but not with cmath in Visual Studio
... so that you can include it again with that define now changed to add M_PI etc. This is NOT the case with cmath. So you need to make sure you #define _USE_MATH_DEFINES before you include anything else. Hope that clears it up for you :)
Failing that just include math.h you are using non-standard C/...
Why is “origin/HEAD” shown when running “git branch -r”?
...Hub
where no one will ssh in and work on
that code, but only pull or push, etc)
didn't and shouldn't have a HEAD
because there was, basically, no
working copy. Not so?
I had the exact same impression like you said.
And I even can not delete that origin/HEAD remote-tracking branch cloned from github...
insert multiple rows via a php array into mysql
...I provided,I'm failing to see your point. Care to elaborate (via pastebin, etc?). Thanks-
– bdl
Jun 3 '10 at 14:19
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How to execute XPath one-liners from shell?
...ght between matching, value, root to just view the document structure, and etc.. Even with the first sel -t -m ... -v ... example from this page: arstechnica.com/information-technology/2005/11/linux-20051115/2, matching all but the last node and saving that one for the value expression like my use ...
.gitignore for PhoneGap/Cordova 3.0 projects - what should I commit?
...a 5.1.1 and this .gitignore allows me to still customize with custom icons etc while blocking all the stuff we don't need to version for both Android and IOS. Yes .gradle is used so don't remove it!
www/
.gradle/
build/
.tmp/
.temp/
coverage/
*.log
node_modules/
bower_components/
...
How do I check CPU and Memory Usage in Java?
... { MemoryUsage poolCollectionMemoryUsage = memoryPool.getCollectionUsage(); usedHeapMemoryAfterLastGC += poolCollectionMemoryUsage.getUsed(); } }
– danieln
Jul 1 '13 at 10:23
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Passing a String by Reference in Java?
...t because it is the only general one. It allows also passing boolean, int, etc. Can you please explain a little bit more in details the performance of this solution - you claim that the first one is better from a performance point of view.
– meolic
Apr 26 '19 a...