limit

问题 I have a List with items that I want to download. I use a for Loop to iterate the list. For each item in this List I start a new Thread that references the item. My Problem is that I want limit the maxDownload at the same time. for (int i = downloadList.Count - 1; i >= 0; i--) { downloadItem item = downloadList[i]; if (item.Status != 1 && item.Status != 2) { ThreadStart starter = delegate { this.DownloadItem(ref item); }; Thread t = new Thread(starter); t.IsBackground = true; t.Name = item

问题 On https://developers.facebook.com/policy/#features they say an app has an upper limit of 100M calls per day. However, the error code: 613 - FQL_EC_RATE_LIMIT_EXCEEDED - Calls to stream have exceeded the rate of 100 calls per 600 seconds specifies that you can averagely perform up to 1 call per 6 seconds. Those two limits conflicts. The FQL is supposed to be part of the API, right? If not, then you can perform up to 100000000 calls per day to the API but only up to 14400 FQL queries. But if

问题 We were told to have 10 checkboxes and the user is only allowed to check 1-3 check boxes. After the user clicks a button indicating that he/she has completed the requirements and after the computer randomly selects a checkbox. The remaining checkbox wil be delared as a winner. This is a gaming program by the way. I'm using Swing and AWT. 回答1: You can limit a checkbox being selectable or not by disabling the component: JCheckBox checkBox = new JCheckBox("Try to click on me"); checkBox

问题 I have a situation where I'm performing a join between two tables, and I need a value from one table to be used as a LIMIT factor for a subquery in the join. Assume I have the following [extremely simplified] tables - data: experiment_id | value --------------|-------- 1 | 2.5 1 | 2.6 1 | 4.5 1 | 2.3 1 | 3.5 1 | 2.8 2 | 2.3 2 | 1.2 2 | 1.1 2 | 3.6 2 | 3.8 2 | 4.1 2 | 7.9 2 | 4.2 2 | 1.0 data_clip: experiment_id | clip_index --------------|------------ 1 | 3 2 | 5 I need to sum each experiment

问题 I have a situation where I'm performing a join between two tables, and I need a value from one table to be used as a LIMIT factor for a subquery in the join. Assume I have the following [extremely simplified] tables - data: experiment_id | value --------------|-------- 1 | 2.5 1 | 2.6 1 | 4.5 1 | 2.3 1 | 3.5 1 | 2.8 2 | 2.3 2 | 1.2 2 | 1.1 2 | 3.6 2 | 3.8 2 | 4.1 2 | 7.9 2 | 4.2 2 | 1.0 data_clip: experiment_id | clip_index --------------|------------ 1 | 3 2 | 5 I need to sum each experiment

问题 I have a situation where I'm performing a join between two tables, and I need a value from one table to be used as a LIMIT factor for a subquery in the join. Assume I have the following [extremely simplified] tables - data: experiment_id | value --------------|-------- 1 | 2.5 1 | 2.6 1 | 4.5 1 | 2.3 1 | 3.5 1 | 2.8 2 | 2.3 2 | 1.2 2 | 1.1 2 | 3.6 2 | 3.8 2 | 4.1 2 | 7.9 2 | 4.2 2 | 1.0 data_clip: experiment_id | clip_index --------------|------------ 1 | 3 2 | 5 I need to sum each experiment

问题 I have an event in my Laravel application that for specific records it exceeds the allowed maximum limit (10240 bytes) of Pusher. Is it correct that Laravel serializes every public attribute on the Event class? If so I suspect that the serialized model should not exceed the 10kb limit but it fails anyway. Are there any approaches to decrease the size of the data content? class PostChanged implements ShouldBroadcast { use Dispatchable, InteractsWithSockets, SerializesModels; public $post; /**

问题 HI! How do i check if the users are trying to upload bigger than 2mb files? I would like to deny that and put an error message to the user who is trying to do that. I know it is something like this, but what shall i change the 50000 to to become 2mb? if ($_FILES['imagefile']['size'] > 50000 ) { die ("ERROR: Large File Size"); } 回答1: 2 MB is 2097152 bytes. Change the 50000 to 2097152 and you're set. 回答2: The 5,000 is the number of byes, so basically you just need to convert 2MB to bytes. 1 MB

问题 HI! How do i check if the users are trying to upload bigger than 2mb files? I would like to deny that and put an error message to the user who is trying to do that. I know it is something like this, but what shall i change the 50000 to to become 2mb? if ($_FILES['imagefile']['size'] > 50000 ) { die ("ERROR: Large File Size"); } 回答1: 2 MB is 2097152 bytes. Change the 50000 to 2097152 and you're set. 回答2: The 5,000 is the number of byes, so basically you just need to convert 2MB to bytes. 1 MB

问题 Problem: I have a list of names and addresses. Some names (persons) have the same address (street, zip code, town) like others. I want to select all those names with addresses with no more than three occurrences and from the rest the first three names each of a bunch pointing to the same address. Example: Albert | Adr1 Berta | Adr1 Cesar | Adr1 Donald | Adr1 Eric | Adr2 Fritz | Adr2 Gerd | Adr2 Henry | Adr3 The result set should be Albert | Adr1 Berta | Adr1 Cesar | Adr1 Eric | Adr2 Fritz |