array

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 as the title says i'm having an issue when trying to display the 5 results from my sql query i don't know how to convert them to an array, # Collection of SQL try { $sql = $conn->query("SELECT Channel_Location FROM channels ORDER BY RAND() Limit 5"); } catch(PDOException $e) { echo $sql . "<br>" . $e->getMessage(); } foreach($sql->fetchAll(PDO::FETCH_ASSOC) as $c) { echo $c . "<br>"; } $conn = null; I can't work out how to display the results, it displays one result if i change foreach($sql->fetchAll(PDO::FETCH_ASSOC) as $c) { to foreach(

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 trying to create my own JS Password Strength Meter. It was working before but i didn't like how it worked so I tried using {score +=10;} Instead of just: score++ This is my code: http://jsfiddle.net/RSq4L/ Best Regards, Shawn, Hope someone can help 回答1: Multiple issues: Your passwordStrength() function was not defined in the global scope in the jsFiddle so it wasn't getting called. This is probably an artifact of how you set up the jsFiddle, perhaps not an issue in your real code. The method of getting the appropriate ratingMsg will not

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 originally was satisfied with the following in order to update row 1 and row 2 to the same value (status=1) if ($_POST){ $sql ="UPDATE table SET status = 1, WHERE id IN (1,2 );"; db()->query($sql); if(db()->query($sql)){ echo "<b>Good</b>"; } else{ echo "<b>No Good</b>"; } } But now I want to update with different values, ie- row 1 to status 1, row 2 to status 2, and row 3 to status 3. Off the bat, I know I need to 1. Use an array and loop through it three times. 2. pass in the array value into the $sql I figure it would be something like

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: sorry for being vague but I have a PHP script which extracts data from a database and displays it, however instead of outputting the contents of the database it outputs 'Array' the number of times their are results. (Couldn't get the to work again, script uploaded here ), the script's output is also here .) Thanks :-) 回答1: $row is an array, in contains all record fields. Use echo $rows [ 'unique_id' ]; instead. And don't use mysql extension 回答2: Use print_r($array); or var_dump($array); to see 回答3: Have you tried printr or var_dump

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'm looking at the documentation for FileUtils. I'm confused by the following line: FileUtils . cp % w ( cgi . rb complex . rb date . rb ), '/usr/lib/ruby/1.6' What does the %w mean? Can you point me to the documentation? 回答1: %w(foo bar) is a shortcut for ["foo", "bar"] . Meaning it's a notation to write an array of strings separated by spaces instead of commas and without quotes around them. You can find a list of ways of writing literals in zenspider's quickref . 回答2: I think of %w() as a "word array" - the elements are

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 have an array with size[5] . I added 5 values into this array and then removed the values. Now my array have only one value. If I add another value to this array it shows the error Index was outside the bounds of the array . 回答1: If you have an array of size 5 you can add values 0 to 4 (arrays start at index 0): object [] arr = new object [ 5 ]; arr [ 0 ] = new object (); arr [ 4 ] = new object (); // this will give your Index was outside the bounds of the array exception: arr [ 5 ] = new object (); 转载请标明出处: Index was outside the

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 have a situation where i have to manually merge a label with value and then store in array. For instance aaa 10 , bbb 20, ccc 30 The values are coming from text field and finally i have to bring this in such format... with comma seperated and label's are hardcoded. How to create an Array or a String like this aaa 10 , bbb 20, ccc 30 with Key:Value pair 回答1: I'm not exactly sure what you're asking for, but perhaps this helps //create array var list = []; //get value from input aaa var value1 = document.getElementById("aaa").value; //add

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 as the title says i'm having an issue when trying to display the 5 results from my sql query i don't know how to convert them to an array, # Collection of SQL try { $sql = $conn->query("SELECT Channel_Location FROM channels ORDER BY RAND() Limit 5"); } catch(PDOException $e) { echo $sql . "<br>" . $e->getMessage(); } foreach($sql->fetchAll(PDO::FETCH_ASSOC) as $c) { echo $c . "<br>"; } $conn = null; I can't work out how to display the results, it displays one result if i change foreach($sql->fetchAll(PDO::FETCH_ASSOC) as $c) { to foreach(

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: Hello could someone explain how is the following code working? After importing the required libraries.. >>>features=np.random.rand(150,4) >>>features= np.append(features,np.random.randint(3,size=(150,1)),axis=1) >>>target=np.array([0,1,2]) >>>plt.scatter(features[target == 1,0], features[target == 1,1], marker='o', c='r') I am getting a plot of 1st and 2nd column of 'features' having 1 in the last column. But I am not able to understand how. As far as I can understand 'target==1' creates a boolean array but how can it return values of the

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: Im learning javascript and looking over some code and ran into this: array.map(item => item[prop]) where prop may be something like 'id' or something. I haven't been able to find an actual example of this on the web. So I tried just doing something like this: property = 'id'; var arr = [1,2,3,4]; var something = arr.map(item => item[property]); console.log(something); This doesn't work however. And I can't seem to find an example on the web. Is this a new type of syntax for the map function? 回答1: The "arrow function" is a shorthand way of