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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: Both this style: struct _something { ... }; typedef struct _something someting; and that style: typedef struct _something { ... } something; are correct typedef declarations in C. Note that the presence of the structure declaration in the header file is made on purpose: I need to have access to the inner components of the structure somewhere else. One drawback of the first declaration is that when you use any IDE, the automatic "jump to declaration" often directs you to the typedef struct _something someting; instead of giving you directly

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 know that you can insert multiple rows at once, is there a way to update multiple rows at once (as in, in one query) in MySQL? Edit: For example I have the following Name id Col1 Col2 Row1 1 6 1 Row2 2 2 3 Row3 3 9 5 Row4 4 16 8 I want to combine all the following Updates into one query UPDATE table SET Col1 = 1 WHERE id = 1; UPDATE table SET Col1 = 2 WHERE id = 2; UPDATE table SET Col2 = 3 WHERE id = 3; UPDATE table SET Col1 = 10 WHERE id = 4; UPDATE table SET Col2 = 12 WHERE id = 4; 回答1: Yes, that's possible - you can use INSERT ... ON

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 came across this kind of code once in a while - I suspect the creator is/was afraid that table delete would iterate over the table and "cost performance" (which imho will not be done either way)... is there any real benefit one might get/consider/imagine from not using the the table delete here? myClass** table = new myClass* [size]; ... //some code that does not reallocate or change the value of the table pointer ;) delete table; // no [] intentionally 回答1: There's really no reason to write like that and a serious reason to never do so.

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: This is the first time I've really sat down and tried python 3, and seem to be failing miserably. I have the following two files: test.py config.py config.py has a few functions defined in it as well as a few variables. I've stripped it down to the following: However, I'm getting the following error: ModuleNotFoundError: No module named 'config' I'm aware that the py3 convention is to use absolute imports: from . import config However, this leads to the following error: ImportError: cannot import name 'config' So I'm at a loss as to what to

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 the following code and I get the error 'Duplicate Declaration query_url'. switch(condition) { case 'complex': const query_url = `something`; break; default: const query_url = `something`; break; } I understand that query_url is getting declared twice which isn't right. But i don't know how to resolve this. Can someone please help on what should be the correct way to make this work? 回答1: if query_url can have multiple values depending on the switch branch obviously you need a variable ( declare either with var or let ). const is set

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 looking for web based tool like phpMyAdmin, but for SQL Server. Any suggestions? 回答1: I've also found this product which seems to support SQL Server 回答2: SQL Server Web Data Administrator Edit : fixed link 回答3: This works and is under active development: http://www.adminer.org/ 回答4: You could try some thing from the list provided by Microsoft. Microsoft also apparently has a web admin , but it's rather old from what I can see. I'm interested in this area as well, so please report back on your conclusions. 回答5: - THIS MIGHT NOT BE 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): 由 翻译 强力驱动 问题: This dialog asks whether you want to install some other app...so when onclicked no button it must go back to the previous screen downloadDialog . setNegativeButton ( stringButtonNo , new DialogInterface . OnClickListener () { public void onClick ( DialogInterface dialogInterface , int i ) { finish (); } }); this gives the error: The method finish() is undefined for the type new DialogInterface.OnClickListener(){} how can i achieve what i wanted??? package com . Android . barcode ; import android . app . Activity ; import android .

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 learning to work with some math like PHP query and just got to the modulo, I am not quite sure in what situations to use this because of something i stumbled on and yes I did already read one of the posts here about the modulo : Understanding The Modulus Operator % (This explanation is only for positive numbers since it depends on the language otherwise) The quote above is in the top answer there. But if I focus on PHP only and i use the modulo like this: $x = 8; $y = 10; $z = $x % $y; echo $z; // this outputs 8 and I semi know why.

logstash config email have error : [2018-06-13T20:17:28,072][ERROR][logstash.outputs.email ] Something happen while delivering an email {:exception=>#<Net::ReadTimeout: Net::ReadTimeout>} 我修改配置.开启tls.端口:587就可以了 文章来源: logstash常见错误

App() App() onLaunch Function onShow Function onHide Function onError Function onPageNotFound Function Any App ({ onLaunch : function ( options ) { // Do something initial when launch. }, onShow : function ( options ) { // Do something when show. }, onHide : function () { // Do something when hide. }, onError : function ( msg ) { console . log ( msg ) }, globalData : 'I am global data' }) path String query Object scene Number shareTicket String referrerInfo Object referrerInfo.appId String referrerInfo.extraData Object 。 1020 1035 1036 1037 1038 1043 onPageNotFound path String query Object