OStack Q&A-Knowledge Sharing Community

0 votes

281 views

1 answer

sql - Conditional sum in Group By query MSSQL

I have a table OrderDetails with the following schema: --------------------------------- ... Any help would be much appreciated. Regards Freddie See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

488 views

1 answer

mysql - PHP Commands Out of Sync error

I am using two prepared statements in PHP/MySQLi to retrieve data from a mysql database. However, when I run ... statement's '$stmt1->error' See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.7k views

1 answer

apache - How to stop Chrome from redirecting to HTTPS?

A few days ago, Chrome started redirecting all of my vHosts in Wampserver to https. Everything was working fine ... actually fixes the problem. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

237 views

1 answer

java - Is autoboxing possible for the classes I create?

Is there any way to use autoboxing for the classes I create? For example, I have this subclass of Number. public ... for me. Thanks in advance! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

477 views

1 answer

.net - Redirect stdout+stderr on a C# Windows service

I've written a Windows service in C# using the ServiceBase helper. During its execution, some procedures in an ... service to a log file? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

104 views

1 answer

Sort an array by a child array's value in PHP

I have an array composed of arrays. I want to sort the parent array by a property of the child arrays. ... of the numerous PHP sort functions? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

329 views

1 answer

spreadsheet - Excel VLOOKUP where the key is not in the first column

"The range where the lookup value is located. Remember that the lookup value should always be in the first ... LibreOffice would be preferable. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

529 views

1 answer

javascript - Firestore collection group query on documentId

In my scenario a user can "like" the profile of another user. As a result I have a subcollection ... documentId in the Firestore console. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

865 views

1 answer

Error Code 1292 - Truncated incorrect DOUBLE value - Mysql

I am not sure what is this error! #1292 - Truncated incorrect DOUBLE value: I don't have double ... AUTO_INCREMENT=534 DEFAULT CHARSET=utf8 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

113 views

1 answer

node.js - Expressjs raw body

How can I access raw body of request object given to me by expressjs? var express = require('./node_modules/express'); ... ' }); app.listen(80); See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

871 views

1 answer

ms access - VBA: Difference in two ways of declaring a new object? (Trying to understand why my solution works)

I was creating a new object within a loop, and adding that object to a collection; but when I read back ... the first implementation was wrong? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

279 views

1 answer

javascript - When is window.onload fired?

I'm a bit confused as to when the window.onload event is fired. For example: i have a page that has ... all the scripts actually get loaded? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.2k views

1 answer

cron - Cronjob or MySQL event?

I have to update my MySQL database every hour, and I was wondering what the advantages/disadvantages of using a ... ? Which is safer? Thanks! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

440 views

1 answer

r - Changing date format to "%d/%m/%Y"

Would like to change the date format. My data frame is shown below and would like to change all the date formats to ... /09 12/10/09 2009-09-27 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

258 views

1 answer

c# - How deterministic is floating point inaccuracy?

I understand that floating point calculations have accuracy issues and there are plenty of questions explaining why. ... and see what happens. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

93 views

1 answer

How can I open Android browser with specified POST parameters?

I my application, I need to open a link in Android Browser. This page can receive some data just via POST. Could ... could you give my a hint? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

316 views

1 answer

How to create file and return it via FileResult in ASP.NET MVC?

I have to create and return file in my aplication ASP.net MVC aplication. The file type should be normal .txt ... to do it with stream result? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.6k views

1 answer

javafx - How to disable Button when TextField is empty?

In the following code I have a TextField and a Button. I need to disable the Button when ever the TextField is ... table, hb); return vb1; } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

159 views

1 answer

.net - How to set system environment variable in C#?

I'm trying to set a system environment variable in my application, but get an SecurityException. I tested ... have any other suggestions? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

106 views

1 answer

c# - Build and load Assetbundles in Unity

I cannot get Unity Assetbundles working in an iOS build. In Unity I build the assetbundles: using UnityEditor ... project, the problem persists. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

157 views

1 answer

Is it necessary to declare PHP array before adding values with []?

$arr = array(); // is this line needed? $arr[] = 5; I know it works without the first line, but it's ... you need to add items one by one. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

349 views

1 answer

javascript - jQuery.parseJSON vs JSON.parse

jQuery.parseJSON and JSON.parse are two functions that perform the same task. If the jQuery library is already loaded, ... ? If no, why not? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

165 views

1 answer

python - Is everything greater than None?

Is there a Python built-in datatype, besides None, for which: >>> not foo > None True where foo is a value of that type? How about Python 3? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

288 views

1 answer

javascript - Error: TypeError: $(...).dialog is not a function

I am having an issue getting a dialog to work as basic functionality. Here is my jQuery source imports: < ... Position dependencies. Any Ideas? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

368 views

1 answer

python - Add months to a date in Pandas

I'm trying to figure out how to add 3 months to a date in a Pandas dataframe, while keeping it in the ... int' object has no attribute 'astype' See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

209 views

1 answer

html - What is the performance impact of the universal selector?

I'm trying to find some simple client-side performance tweaks in a page that receives millions of monthly ... selector performs more slowly. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

117 views

1 answer

Sleep function in Windows, using C

I need to sleep my program in Windows. What header file has the sleep function? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.1k views

1 answer

batch file - Running Microsoft Access as a Scheduled Task

I am seeking comments on how to schedule auto updates of a database (.accdb) since I am not very comfortable with ... ride of the .bat and .vbs See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

Categories

Recent questions

Just Browsing Browsing

Most popular tags