assert

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I was wondering, I am aware you can use assert to add facts or rules or whatever if you have declared the predicate to be -:dynamic , but this only allows the changes that are made to be kept in that session only, e.g. if you close the Prolog window then the database changes are lost. So I was wondering, is there any way of making it so that the assert and retract predicates can make permanent changes to the Prolog .pl file? Thanks 回答1: I can suggest you a very simple way of doing this. 1 ?- assert(a(1)). true. 2 ?- assert(a(2)). true. 3 ?-

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I've started to dig into the GLib documentation and discovered that it also offers a unit testing framework. But how could you do unit tests in a procedural language? Or does it require to program OO in C? 回答1: Unit testing only requires "cut-planes" or boundaries at which testing can be done. It is quite straightforward to test C functions which do not call other functions, or which call only other functions that are also tested. Some examples of this are functions which perform calculations or logic operations, and are functional in nature

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am testing stored procedures with mocha running in a nodejs instance. I have this test skeleton: var chai = require('chai'), MyReporter = require("../MyReporter.js"), chokidar = require('chokidar'), expect = chai.expect, should = chai.should, assert = chai.assert; var Mocha = require('mocha'); amochai = new Mocha({ bail: false, debug: true }); amochai.addFile("mytest_v1.js"); function runMocha(callback) { amochai.run(function () { callback(); }); } watcher.on('change', function(path, stats) { runMocha(function () {}); } Problem : My tests

I have a question about assert() in Linux: can I use it in the kernel? If no, what techniques do you usually use if, for example I don't want to enter NULL pointer? The corresponding kernel macros are BUG_ON and WARN_ON . The former is for when you want to make the kernel panic and bring the system down (i.e., unrecoverable error). The latter is for when you want to log something to the kernel log (viewable via dmesg ). As @Michael says, in the kernel, you need to validate anything that comes from userspace and just handle it , whatever it is. BUG_ON and WARN_ON are to catch bugs in your own

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: There is following simple code: from multiprocessing import Process, freeze_support def foo(): print 'hello' if __name__ == '__main__': freeze_support() p = Process(target=foo) p.start() It works good on Linux or Windows with Python 3.3, but fails on Windows with Python 2.7. Traceback (most recent call last): File " ", line 1, in File "c:\Python27\lib\multiprocessing\forking.py", line 346, in main prepare(preparation_data) File "c:\Python27\lib\multiprocessing\forking.py", line 454, in prepare assert main_name not in sys.modules, main_name

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: So I want to generate my Data Frame schema dynamically I have the following Error: assert isinstance(dataType, DataType), "dataType should be DataType" AssertionError: dataType should be DataType code: filteredSchema = [] for line in correctSchema: fieldName = line.split(',') if fieldName[1] == "decimal": filteredSchema.append([fieldName[0], "DecimalType()"]) elif fieldName[1] == "string": filteredSchema.append([fieldName[0], "StringType()"]) elif fieldName[1] == "integer": filteredSchema.append([fieldName[0], "IntegerType()"]) elif

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I've got the error 'W/SyncTree(31625): Listen at /address failed: DatabaseError: Permission denied' while sending a request to firebase with an anonymous firebase user and without fancy firebase database rules :) . ..and i want to find out what causes this message. EDIT: error is the same with an existing user, means user signIn seems to work but accessing database not. What i've done so far: Set up firebase (including adding google_service.json, dependencies in pubspec.yaml) - works so far creating login as follows (like in example from

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I am trying to assert that a property in a mock object was set with a given type. The property has an abstract type and is set with one of a number of concrete types. This is what I'm trying to do, and it's always passing the test regardless of the value that Foo.DoSomething() sets Foo.Bar with: [ Test ] public void DoSomething_SetsCorrectBar () { // Arrange Foo foo = MockRepository . GenerateMock < Foo >(); // Creates mock in Replay mode (what I want for AAA syntax). // Act foo . DoSomething (); // Assert that DoSomething set Foo

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm using the Moq framework for unit tests, and I came across this interesting problem. public interface Bar : IEquatable<Bar> { } [TestClass] public class TestClass { Mock<Bar> a; Mock<Bar> b; public TestClass() { a = new Mock<Bar>(); b = new Mock<Bar>(); a.Setup(bar => bar.Equals(b.Object)).Returns(true); } [TestMethod] public void AssertEqualsTest() { Assert.AreEqual(a.Object, b.Object); //fails } [TestMethod] public void AssertIsTrueTest() { Assert.IsTrue(a.Object.Equals(b.Object)); //passes } } First Issue So Assert.AreEqual just fails.