counter

Can I include an additional counter in a MySQL result set? I have the following query which gives me two columns back. I need an additional column (only in the result) indicating the row of each line in the result set. select orderid, round(sum(unitprice * quantity),2) as value from order_details group by orderid order by 2 desc limit 10 I need something like the following: 10865 1 17250.00 11030 2 16321.90 10981 3 15810.00 10372 4 12281.20 10424 5 11493.20 Try this: SET @counter = 0; Select sub.* FROM ( select orderid, (@counter := @counter +1) as counter, round(sum(unitprice * quantity),2)

I need to make a simple countdown timer from 5 to zero, with the buttons to START and STOP the counter. The only thing that I don't know is that why won't my counter stop. The code is presented below: function clock() { var myTimer = setInterval(myClock, 1000); var c = 5; function myClock() { document.getElementById("demo").innerHTML = --c; if (c == 0) { clearInterval(myTimer); alert("Reached zero"); } } } <p id="demo">5</p> <button onclick="clock()">Start counter</button> <button onclick="clearInterval(myTimer)">Stop counter</button> Here you go, you just needed to make myTimer global. I also

I would like to use the collections.Counter class to count emojis in a string. It generally works fine, however, when I introduce colored emojis the color component of the emoji is separated from the emoji like so: >>> import collections >>> emoji_string = "👌🏻👌🏼👌🏽👌🏾👌🏿" >>> emoji_counter = collections.Counter(emoji_string) >>> emoji_counter.most_common() [('👌', 5), ('🏻', 1), ('🏼', 1), ('🏽', 1), ('🏾', 1), ('🏿', 1)] How can I make the most_common() function return something like this instead: [('👌🏻', 1), ('👌🏼', 1), ('👌🏽', 1), ('👌🏾', 1), ('👌🏿', 1)] I'm using Python 3.6 You'll have to split your

如果自相加/自相减的值不会被使用，那么两者形式没有区别： 1 let counter = 0; 2 counter++; 3 ++counter; 4 alert( counter ); // 2，以上两行作用相同 如果我们想要对变量自相加 并且 立刻使用值，那么我们需要使用前置形式： 1 let counter = 0; 2 alert( ++counter ); // 1 如果我们想要使用之前的值，那么我们需要使用后置形式： 1 let counter = 0; 2 alert( counter++ ); // 0 总结： ++counter 立即应用（现任） counter++ 下次应用（备胎） 来源： https://www.cnblogs.com/codesyofo/p/11642893.html

I want to count the number of words in a passage that contains both English and Chinese. For English, it's simple. Each word is a word. For Chinese, we count each character as a word. Therefore, 香港人 is three words here. So for example, "I am a 香港人" should have a word count of 6. Any idea how can I count it in Javascript/jQuery? Thanks! Try a regex like this: /[\u00ff-\uffff]|\S+/g For example, "I am a 香港人".match(/[\u00ff-\uffff]|\S+/g) gives: ["I", "am", "a", "香", "港", "人"] Then you can just check the length of the resulting array. The \u00ff-\uffff part of the regex is a unicode character

A set uses .update to add multiple items, and .add to add a single one. Why doesn't collections.Counter work the same way? To increment a single Counter item using Counter.update , you have to add it to a list: c = Counter() for item in something: for property in properties_of_interest: if item.has_some_property: # pseudocode: more complex logic here c.update([item.property]) elif item.has_some_other_property: c.update([item.other_property]) # elif... etc Can I get Counter to act like set (i.e. eliminate having to put the property in a list)? Edit: Use Case: Imagine a case where you have some