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java - if(false) vs. while(false): unreachable code vs. dead code

I tried the following in Eclipse: if (false) {}: warning 'dead code' while (false) {}: compilation error ... allow while (false) for the same debugging purpose? Question&Answers:os...

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

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node.js - Making mongoose.js queries run synchronously

I have two mongoose collections. The first stores a list of places, the second is visits to the places. My ... is there a way to make them run synchronously? Question&Answers:os...

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

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html - :nth-child(even/odd) selector with class

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

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asp.net - Force download of a file on web server - ASP .NET C#

I need to force the initiation of download of a .sql file, when user clicks a button in my ASP .NET (C# ... .imageshack.us/img40/2103/erroro.gif What's wrong? Question&Answers:os...

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

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Difference between &function and function() in perl

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

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python - How to configure Atom to run Python3 scripts?

In my terminal, I type $ which python3, outputting /opt/local/bin/python3 I would like to configure Atom to run ... ? Is there a different package I could use? Question&Answers:os...

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

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sql - Calculate working hours between 2 dates in PostgreSQL

I am developing an algorithm with Postgres (PL/pgSQL) and I need to calculate the number of working hours ... be great to consider hour fractions as well. Question&Answers:os...

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

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android - pass arraylist from one activity to other

How can I pass ArrayList from one activity to other activity? Question&Answers:os...

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

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Protecting against SQL injection in python

I have some code in Python that sets a char(80) value in an sqlite DB. The string is obtained directly from the ... ( label, userId, refId) ) self._db.commit() Question&Answers:os...

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

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android - How to create custom BaseAdapter for AutoCompleteTextView

I've been having difficulty creating a custom ArrayAdapter for AutoCompleteTextView such errors that ... using BaseAdapter for AutoCompleteTextView instead. Question&Answers:os...

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

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c++ - Serial Comm using WriteFile/ReadFile

//#include "StdAfx.h" #include <stdio.h> #include <windows.h> #include <winbase.h> #include <iostream> #include < ... is my first try at this with no success. Question&Answers:os...

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

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c# - Passing an empty array as default value of an optional parameter

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

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c++ - Who deletes the memory allocated during a "new" operation which has exception in constructor?

I really can't believe I couldn't find a clear answer to this... How do you free the memory allocated after a ... used to allocate THE object (Blah in my case). Question&Answers:os...

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

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r - Simplest way to get rbind to ignore column names

This came up just in an answer to another question here. When you rbind two data frames, it matches columns by name ... like rbind(df,df[,2:1],byIndex=T). Question&Answers:os...

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

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PHP session side-effect warning with global variables as a source of data

I'm trying to host a PHP web site that was given to me. I see this warning: Warning: Unknown: Your script ... down the source of this problem within the code? Question&Answers:os...

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

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javascript - regular expression to match exactly 5 digits

testing= testing.match(/(d{5})/g); I'm reading a full html into variable. From the variable, want to grab ... $ behind, but it making result come out as null. Question&Answers:os...

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

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javascript - Displaying pdf from arraybuffer

I am returning stream data from laravel dompdf from this code $pdf = App::make('dompdf.wrapper'); $pdf->loadHTML(" ... to fix this. How to display pdf file. Question&Answers:os...

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

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java - How do I restrict JFileChooser to a directory?

I want to limit my users to a directory and its sub directories but the "Parent Directory" button allows them ... directory. How should I go about doing that? Question&Answers:os...

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

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548 views

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setuptools - How to force a python wheel to be platform specific when building it?

I am working on a python2 package in which the setup.py contains some custom install commands. These commands ... force the build to be platform specific ? Question&Answers:os...

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

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268 views

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c# - Binding Listbox to List<object> in WinForms

What's the simplest way to bind a Listbox to a List of objects in Windows Forms? Question&Answers:os...

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

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186 views

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python - Deleting list elements based on condition

I have a list of lists: [word, good freq, bad freq, change_status] list_1 = [['good',100, 20, 0.2],['bad', 10, 0 ... ', 10, 0, 0.0]] How do I selective do that? Question&Answers:os...

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

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html - How to use JavaScript to change the form action

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

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244 views

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What's the C++ idiom equivalent to the Java static block?

I have a class with some static members, and I want to run some code to initialize them (suppose this ... to that of static initialization by expression... Question&Answers:os...

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

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html - Tab Index on div

Please see the form HTML code below <form method="post" action="register"> <div class="email"> Email <input ... TAB when the cursor is at email input field? Question&Answers:os...

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

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javascript - How to get the number of lines in a textarea?

What I would like is to count the number of lines in a textarea, e.g: line 1 line 2 line 3 line 4 should ... ; It always gives '1' no matter how many lines. Question&Answers:os...

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

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.net - Maximum array length quota

I'm writing a small WCF/WPF app to resize images but WCF is giving me grief when I try to send an ... the userPrincipalName tag has been altered for my privacy Question&Answers:os...

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

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345 views

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python - Date Ordinal Output?

I'm wondering if there is a quick and easy way to output ordinals given a number in python. For example, given the ... Venues > Bar Academy > 2009 > April > 1st Question&Answers:os...

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

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c++ - How to initialize std::array<T, n> elegantly if T is not default constructible?

How do I initialize std::array<T, n> if T is not default constructible? I know it's possible to initialize it ... to repeat value by hand if n is too large. Question&Answers:os...

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

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