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What is the "base class" for C# numeric value types?

Say I want to have a method that takes any kind of number, is there a base class (or some other concept) that I can ... ) { return "$" + num; } See Question&Answers more detail:os...

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

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java - ServletRequest.getParameterMap() returns Map<String, String[]> and ServletRequest.getParameter() returns String?

Can someone explain to me why ServletRequest.getParameterMap() returns type Map<String, String[]> ServletRequest. ... one value. TIA. See Question&Answers more detail:os...

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

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android - getSystemServices is undefined when called in a Fragment?

I want TextViews to display the sensors readings in a Fragment. When trying to initialize the SensorManager the ... stub } }; } See Question&Answers more detail:os...

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

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django - 'NOT NULL constraint failed' after adding to models.py

I'm using userena and after adding the following line to my models.py zipcode = models.IntegerField(_('zipcode' ... is this related to Userena? See Question&Answers more detail:os...

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

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java - Spring @Value annotation always evaluating as null?

So, I have a simple properties file with the following entries: my.value=123 another.value=hello world This ... just fine. What gives? See Question&Answers more detail:os...

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

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831 views

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ssh - git clone hangs forever on github

When I follow point 5 (Test everything out) in the github guide, the ssh command also hangs forever. According to ... env LC_CTYPE = en_US.UTF-8 See Question&Answers more detail:os...

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

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sockets - Java simple code: java.net.SocketException: Unexpected end of file from server

I wrote some simple code in Java, the method should connect to the website and return the BufferedReader. private ... Has anybody got any ideas? See Question&Answers more detail:os...

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

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c# - The module was expected to contain an assembly manifest

I have a project in c# that uses c++ library and some dlls. When I run it it works ... .ProcessRequestInternal(HttpWorkerRequest wr) +456 See Question&Answers more detail:os...

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

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java - Why can't I split a string with the dollar sign?

I want to split a string which has content like this: a$b$c but when I use: String data=... data.split("$" ... works. does anyone has any Idea? See Question&Answers more detail:os...

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

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postgresql - ERROR: unterminated quoted string at or near

While executing below shown trigger code using ANT I am getting the error org.postgresql.util.PSQLException: ERROR: ... sweeper(); END; See Question&Answers more detail:os...

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

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sql - how to remove time from datetime

The field DATE in the database has the following format: 2012-11-12 00:00:00 I would like to remove the time ... the date like this: 11/12/2012 See Question&Answers more detail:os...

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

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How to use provided scope for jar file in Gradle build?

I need to use Amazon Maps and Amazon Messaging in my apps. With gradle, I did not succeed in adding the ... share your build.gradle file here. See Question&Answers more detail:os...

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

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492 views

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javascript - "Aw, Snap" when data uri is too large

I'm writing a chrome extension which does the following: Downloads a file from a website to memory using ... length is greater than 2097100? See Question&Answers more detail:os...

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

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java - Time complexity of contains(Object o), in an ArrayList of Objects

As the title says, I was wondering what the time complexity of the contains() method of an ArrayList is. See Question&Answers more detail:os...

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

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hibernate - Convert list in entity to single string column in database

I have a VARCHAR field in my database, and the value of this field is val1,val2,val3. Is it possible ... entity using comma as split delimiter? See Question&Answers more detail:os...

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

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533 views

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javascript - Configure grunt copy task to exclude files/folders

I have installed the grunt task grunt-contrib-copy. I embedd it in my Gruntfile.js and load the task via grunt. ... folder structure js/**/*? See Question&Answers more detail:os...

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

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300 views

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java - How do you stop Proguard from removing type parameters?

I am currently attempting to obfuscate a series of libraries. My base library, which contains several classes and ... .Object readResolve(); } See Question&Answers more detail:os...

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

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620 views

1 answer

mysql sort string number

I have a column of type varchar that stores many different numbers. Say for example there are 3 rows: 17.95, ... that field as numbers in mysql See Question&Answers more detail:os...

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

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421 views

1 answer

Heroku + node.js: I have a server which uses multiple ports. How can I get Heroku to allocate them?

Umm I'll try to be more clear.. In an application server I have written in node.js, I have inner- ... s getting really frustrating. Thanks! Amit See Question&Answers more detail:os...

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

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460 views

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java - Time complexity of System.arraycopy(...)?

System.arraycopy(Object src, int srcPos, Object dest, int destPos, int length) is a native method. What is the time complexity for this method? See Question&Answers more detail:os...

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

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426 views

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c# - Sorting Files by date

I am using such code to compare files to sort by date.. FileInfo f = new FileInfo(name1); FileInfo f1 = ... by getting all files from directory. See Question&Answers more detail:os...

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

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328 views

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.net - Entity framework 4.3 run migrations at application start

What is the best way to execute all required db migrations at application start with EF 4.3? See Question&Answers more detail:os...

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

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403 views

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php - Why do timestamps have a limit to 2038?

I just found out, running a calendar script, that timestamps in PHP has a limit to 2038. What does it really mean ... from a given date (1970)? See Question&Answers more detail:os...

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

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317 views

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android - Get phone orientation but fix screen orientation to portrait

I want to get the phone orientation but keep the screen orientation to portrait. So no matter the user turns the ... an idea how to fix that? See Question&Answers more detail:os...

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

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308 views

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How to do "hit any key" in python?

How would I do a "hit any key" (or grab a menu option) in Python? raw_input requires you hit return. ... do this using the standard libs? See Question&Answers more detail:os...

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

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420 views

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python - Converting .jpg images to .png

I've looked around and read the docs, and found no way or solution, so I ask here. Is there any packages ... a JPG image to a PNG image? See Question&Answers more detail:os...

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

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724 views

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python - Seaborn - change bar colour according to hue name

I'm using seaborn and pandas to create some bar plots from different (but related) data. The two datasets share a ... both graphs (e.g. black) See Question&Answers more detail:os...

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

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326 views

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PHP: Get n-th item of an associative array

If you have an associative array: Array ( [uid] => Marvelous [status] => 1 [set_later] => Array ( [0] = ... But it just produces a blank entry. See Question&Answers more detail:os...

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

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