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Is there a better way to do optional function parameters in JavaScript? [duplicate]

... Well, you aren't talking about optional parameters - you really are passing a parameter, so this solution doesn't apply to your case. NaN doesn't mean "undefined" - it means you've passing a number but its value is NaN. See stackoverflow.com/questions/3215120/… for more ...
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How can I convert immutable.Map to mutable.Map in Scala?

...table.Map(1->"one",2->"Two") val n = collection.mutable.Map(m.toSeq: _*) This works because a Map can also be viewed as a sequence of Pairs. share | improve this answer | ...
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#include in .h or .c / .cpp?

... True, but doesn't the #ifndef _CALLBACK_H_, on the top of it, prevent the compiler in processing it more than once? – hytromo Feb 8 '14 at 12:25 ...
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Purpose of buildscript block in Gradle

...u can use everything that ships with Gradle out-of-the-box. If you additionally want to use third-party plugins, task classes, or other classes (in the build script!), you have to specify the corresponding dependencies in the buildScript block. ...
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How to use QueryPerformanceCounter?

... #include <windows.h> double PCFreq = 0.0; __int64 CounterStart = 0; void StartCounter() { LARGE_INTEGER li; if(!QueryPerformanceFrequency(&li)) cout << "QueryPerformanceFrequency failed!\n"; PCFreq = double(li.QuadPart)/1000.0; QueryP...
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printf() formatting for hex

... but how about the hex: 0x43A66C31C68491C0 I have tried the following: __int64 int64 = 0x43A66C31C68491C0; printf_s("%#15X %d",int64,int64); But the output is 0XC68491C0, not 0x43A66C31C68491C0 – 123iamking May 7 '16 at 4:16 ...
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What is “entropy and information gain”?

...: female | | ends-vowel=0: male length>=7 | length=5: male basically each node represent a test performed on a single attribute, and we go left or right depending on the result of the test. We keep traversing the tree until we reach a leaf node which contains the class prediction (m or f)...
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Get to UIViewController from UIView?

... All this bs about "you shouldn't do this" is just that. If a view wants to know about its view controller, that is up to the programmer to decide. period. – Daniel Kanaan Dec 7 '15 at ...
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What is the difference between & vs @ and = in angularJS

... @ allows a value defined on the directive attribute to be passed to the directive's isolate scope. The value could be a simple string value (myattr="hello") or it could be an AngularJS interpolated string with embedded expressi...
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server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none

...b certificate used for your gitLab server, and add it to your </git_installation_folder>/bin/curl-ca-bundle.crt. To check if at least the clone works without checking said certificate, you can set: export GIT_SSL_NO_VERIFY=1 #or git config --global http.sslverify false But that would be fo...