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How to watch for array changes?

...tanceof Array) { _self.push.apply(_self, items); } } (function testing() { var x = new ObservableArray(["a", "b", "c", "d"]); console.log("original array: %o", x.slice()); x.addEventListener("itemadded", function(e) { console.log("Added %o at index %d.", e.item, e.ind...
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How to post pictures to instagram using API

... must be jpeg format and it must be a perfect square $filename = 'pictures/test.jpg'; // Set the caption for the photo $caption = "Test caption"; // Define the user agent $agent = GenerateUserAgent(); // Define the GuID $guid = GenerateGuid(); // Set the devide ID $device_id = "android-".$guid; ...
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In pure functional languages, is there an algorithm to get the inverse function?

... have an inverter inv :: F -> F such that inv f . f ≡ id. Say we have tested it for the function f = id, by confirming that inv f (repeat B0) -> (B0 : ls) Since this first B0 in the output must have come after some finite time, we have an upper bound n on both the depth to which inv had a...
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What is the difference between `sorted(list)` vs `list.sort()`?

...39630889893, 2.849375009536743] After some feedback, I decided another test would be desirable with different characteristics. Here I provide the same randomly ordered list of 100,000 in length for each iteration 1,000 times. import timeit setup = """ import random random.seed(0) lst = list(ran...
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What is the most accurate way to retrieve a user's correct IP address in PHP?

...tax if your outputting somewhere protected or into DB. Also also, you can test using google translate if you need a multi-proxy to see the array in x_forwarder_for. If you wanna spoof headers to test, check this out Chrome Client Header Spoof extension. This will default to just standard remote_add...
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Difference between class and type

...tor bodies. Let us understand by the example in the JLS below it. class Test { <T extends C & I> void test(T t) { t.mI(); // OK t.mCPublic(); // OK t.mCProtected(); // OK t.mCPackage(); // OK } } You see that your object ...
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Simplest two-way encryption using PHP

...PHP 7 the mcrypt function is remove from php codebase. So when using the latest version of php (which should be standard) you are not able to use this deprecated function anymore. – Alexander Behling Sep 12 '19 at 13:09 ...
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Different floating point result with optimization enabled - compiler bug?

...g, should I always turn on -ffloat-store option? Because the g++ version I tested is shipped with CentOS/Redhat 5 and CentOS/Redhat 6. I compiled many my programs under these platforms, I am worry about that will cause unexpected bugs inside my programs. – Bear ...
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Passing command line arguments from Maven as properties in pom.xml

...le, where they can then be accessed from your Java code. In my case it is test code that needs to access this properties file, so in the pom the properties file is written to maven's testOutputDirectory: <configuration> <outputFile>${project.build.testOutputDirectory}/my.properties...
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Difference between float and decimal data type

... An excellent test. Years ago the C lib's data conversion functions would often create tons of minute differences in values converted from ASCII to float when compared against those in, say, SQLServer. This is rarely true anymore. Testing ...