elements

问题 One answer is to create a new array that is one element shorter. Are there any other simpler ways to do this? 回答1: Here is one way to remove the first element of an array in vb.net. dim a(n) ... for i = 1 to ubound(a) a(i-1) = a(i) next i redim preserve a(ubound(a)-1) You could make a function for this to remove an arbitrary element of an array (Have a parameter for the initial value of the for loop). 回答2: You can use LINQ to produce your result in a very concise bit of code: Dim a2 = a.Skip

问题 I am planning a tool in Java which would have a drop down containing all the elements of a web page. Is there any way I can read those into a data structure? 回答1: Yes, there is a way. Here is some pseudo-code: List<WebElement> el = driver.findElements(By.cssSelector("*")); for ( WebElement e : el ) { add(e.tagName()); } 回答2: non-pseudo C# version of above: (although I'm just displaying the results in a console IReadOnlyCollection el = driver.FindElements(By.CssSelector("*")); foreach

问题 I am planning a tool in Java which would have a drop down containing all the elements of a web page. Is there any way I can read those into a data structure? 回答1: Yes, there is a way. Here is some pseudo-code: List<WebElement> el = driver.findElements(By.cssSelector("*")); for ( WebElement e : el ) { add(e.tagName()); } 回答2: non-pseudo C# version of above: (although I'm just displaying the results in a console IReadOnlyCollection el = driver.FindElements(By.CssSelector("*")); foreach

问题 I would like to use Selenium to submit a form which contains several elements. For example: <form name="something"> <input type="text" name="a">Username</input> <input type="password" name="b">password</input> <select name="c" id="c"> <option value="1">1</option> <option value="2">2</option> </select> <input type="submit" name="submit">submit</input> </form> If I use find.Element(By.name) to find out the form element, how can I get its children elements a, b, and c? And input the values into

问题 I would like to use Selenium to submit a form which contains several elements. For example: <form name="something"> <input type="text" name="a">Username</input> <input type="password" name="b">password</input> <select name="c" id="c"> <option value="1">1</option> <option value="2">2</option> </select> <input type="submit" name="submit">submit</input> </form> If I use find.Element(By.name) to find out the form element, how can I get its children elements a, b, and c? And input the values into

问题 Is there a way in PHP to select multiple array elements at once, e.g. such that in a for loop, $i = size of first set to be selected, and then subsequent increments represent selecting the next set of that size, from an array - ? Thanks! 回答1: I.e. instead of just looping through one array element at a time, but to loop through selected pairs instead (e.g. 3 elements, and then to do something to those 3). there are many ways to do it. one would be $arr = array(1,2,3,4,5,6,7,8,9); $new = array

问题 Is there a way in PHP to select multiple array elements at once, e.g. such that in a for loop, $i = size of first set to be selected, and then subsequent increments represent selecting the next set of that size, from an array - ? Thanks! 回答1: I.e. instead of just looping through one array element at a time, but to loop through selected pairs instead (e.g. 3 elements, and then to do something to those 3). there are many ways to do it. one would be $arr = array(1,2,3,4,5,6,7,8,9); $new = array

问题 How can I ignore the "not in list" error message if I call a.remove(x) when x is not present in list a ? This is my situation: >>> a = range(10) >>> a [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] >>> a.remove(10) Traceback (most recent call last): File "<stdin>", line 1, in <module> ValueError: list.remove(x): x not in list >>> a.remove(9) 回答1: A good and thread-safe way to do this is to just try it and ignore the exception: try: a.remove(10) except ValueError: pass # do nothing! 回答2: I'd personally

问题 How can I ignore the "not in list" error message if I call a.remove(x) when x is not present in list a ? This is my situation: >>> a = range(10) >>> a [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] >>> a.remove(10) Traceback (most recent call last): File "<stdin>", line 1, in <module> ValueError: list.remove(x): x not in list >>> a.remove(9) 回答1: A good and thread-safe way to do this is to just try it and ignore the exception: try: a.remove(10) except ValueError: pass # do nothing! 回答2: I'd personally

问题 Given a tuple of tuples T : (('a', 'b')) and an individual tuple t1 : ('a','b') why does: t1 in T return False? UPDATE: From Ipython: In [22]: T = (('a','b')) In [23]: t1 = ('a','b') In [24]: t1 in T Out[24]: False And how then to check that a tuple is in another tuple? 回答1: The problem is because T is not a tuple of tuples, it is just a tuple. The comma makes a tuple, not the parentheses. Should be: >>> T = (('a','b'),) >>> t1 = ('a', 'b') >>> t1 in T True In fact, you can loose the outer