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How to get error message when ifstream open fails

... other people in the comments): e.what() seemed at first to be a more C++-idiomatically correct way of implementing this, however the string returned by this function is implementation-dependant and (at least in G++'s libstdc++) this string has no useful information about the reason behind the erro...
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Given an RGB value, how do I create a tint (or shade)?

... RGB. However, RGB colors specified in documents or encoded in images and video are not likely to be in linear RGB, in which case a so-called inverse transfer function needs to be applied to each of the RGB color's components. This function varies with the RGB color space. For example, in the sRGB c...
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Differences between numpy.random and random.random in Python

...l, random.random.seed() is thread-safe (or at least, I haven't found any evidence to the contrary). The numpy.random library contains a few extra probability distributions commonly used in scientific research, as well as a couple of convenience functions for generating arrays of random data. The ra...
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How do you create an asynchronous method in C#?

... If you didn't want to use async/await inside your method, but still "decorate" it so as to be able to use the await keyword from outside, TaskCompletionSource.cs: public static Task<T> RunAsync<T>(Func<T> function)...
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In C++, what is a “namespace alias”?

...the SO "feature" of answering your own questions should not be used to provide paraphrases of such books. – anon Jul 31 '09 at 9:02 25 ...
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In AngularJS, what's the difference between ng-pristine and ng-dirty?

...rm has not been modified by the user. So ng-dirty and ng-pristine are two sides of the same story. The classes are set on any field, while the form has two properties, $dirty and $pristine. You can use the $scope.form.$setPristine() function to reset a form to pristine state (please note that this...
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Declaration of Methods should be Compatible with Parent Methods in PHP

... answered Jun 25 '10 at 3:40 davidtbernaldavidtbernal 11.9k88 gold badges4141 silver badges5757 bronze badges ...
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How to implement if-else statement in XSLT?

...se statement in XSLT but my code just doesn't parse. Does anyone have any ideas? 5 Answers ...
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How Do I 'git fetch' and 'git merge' from a Remote Tracking Branch (like 'git pull')

...# to verify git branch -t branchB remoteR/branchB Of course, that's ridiculously hard to remember, so if you really want to avoid fetching all branches, it is better to alter your .git/config as described in ProGit. Huh? The best explanation of all this is in Chapter 9-5 of ProGit, Git Inter...
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Decompressing GZip Stream from HTTPClient Response

...(handler); } // your code } If using .Net Core 2.1+, consider using IHttpClientFactory and injecting like this in your startup code. var timeout = Policy.TimeoutAsync<HttpResponseMessage>( TimeSpan.FromSeconds(60)); services.AddHttpClient<XApiClient>().C...