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Send POST request using NSURLSession

...configuration delegate:self delegateQueue:nil]; NSURL *url = [NSURL URLWithString:@"[JSON SERVER"]; NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy ...
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Microsecond timing in JavaScript

... more than 1,000 attempts. Only when I'm trying to do things like load an extra web page, or other, the millisecond accuracy degrades (And I'm able to successfully catch my own degraded accuracy by doing a before-and-after time check, to see if my processing time suddenly lengthened to 1 or more mi...
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How to use JavaScript variables in jQuery selectors?

... note that the variable used to concatenate must be non-numerical, so do toString() if id is a number. – isync Oct 12 '15 at 17:41 ...
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“is” operator behaves unexpectedly with integers

... This can be a very fast check relative to say, checking if two very long strings are equal in value. But since it applies to the uniqueness of the object, we thus have limited use-cases for it. In fact, we mostly want to use it to check for None, which is a singleton (a sole instance existing in o...
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Copy a file in a sane, safe and efficient way

...; src.rdbuf(); } This is so simple and intuitive to read it is worth the extra cost. If we were doing it a lot, better to fall back on OS calls to the file system. I am sure boost has a copy file method in its filesystem class. There is a C method for interacting with the file system: #include ...
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When to use Spring Integration vs. Camel?

...ntegration of Kafka is pressed into the SI-way of doing things, which adds extra complexity. Other documentation, e.g. on Stackoverflow is also less plentiful and less helpful than for Camel. My conclusion: cobbler stick to your trade - use Spring as a container and Camel as system integration fram...
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Show the progress of a Python multiprocessing pool imap_unordered call?

... @WakanTanka: It goes in the main script after it spins off the extra threads. In my original example, it goes in the "while" loop, where rs has already launched the other threads. – MidnightLightning Aug 24 '15 at 11:58 ...
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“Rate This App”-link in Google Play store app on the phone

... startActivity(rateIntent); } } private Intent rateIntentForUrl(String url) { Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(String.format("%s?id=%s", url, getPackageName()))); int flags = Intent.FLAG_ACTIVITY_NO_HISTORY | Intent.FLAG_ACTIVITY_MULTIPLE_TASK; if (Buil...
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Find kth smallest element in a binary search tree in Optimum way

...l BST operations take O(depth of node) time, and it takes O(depth of node) extra time to maintain the "number of elements" information for insertion, deletion or rotation of nodes. Therefore, storing information about the number of elements in the left subtree keeps the space and time complexity of ...
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Difference between ObservableCollection and BindingList

...ndingList<T> has the perf penalty only because it is doing something extra that ObservableCollection<T> doesn't support as a feature. Make the latter implement change notification of inner items and give the changedItem's index, it would incur the same. I just think it was a mistake of B...