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Get the client IP address using PHP

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

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objective c - Periodic iOS background location updates

I'm writing an application that requires background location updates with high accuracy and low frequency. The ... Manager in iOS 7 from background task Question&Answers:os...

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

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c# - byte[] to hex string

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

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How to turn a String into a JavaScript function call?

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

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android - Recyclerview and handling different type of row inflation

I'm trying to work with the new RecyclerView, but I could not find an example of a RecyclerView with ... ...make it without the adapter and recyclerView? Question&Answers:os...

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

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c# - Is Task.Result the same as .GetAwaiter.GetResult()?

I was recently reading some code that uses a lot of async methods, but then sometimes needs to execute them ... as Foo foo = GetFooAsync(...).Result; Question&Answers:os...

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

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android - How to lay out Views in RelativeLayout programmatically?

I'm trying to achieve the following programmatically (rather than declaratively via XML): <RelativeLayout...> <TextView ... (tv1); layout.addView(tv2, lp); Question&Answers:os...

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

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What is App.config in C#.NET? How to use it?

I have done a project in C#.NET where my database file is an Excel workbook. Since the location of the connection ... and how to use it in my context here? Question&Answers:os...

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

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jquery - How can I convince IE to simply display application/json rather than offer to download it?

While debugging jQuery apps that use AJAX, I often have the need to see the json that is being returned by ... not change it just to support debugging efforts. Question&Answers:os...

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

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C++ deprecated conversion from string constant to 'char*'

I have a class with a private char str[256]; and for it I have an explicit constructor: explicit myClass(const ... constant to 'char*' Why is this happening? Question&Answers:os...

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

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How do you work with an array of jQuery Deferreds?

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

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sql - Subqueries vs joins

I refactored a slow section of an application we inherited from another company to use an inner join ... 4 newsladder_production.st.submission_id 1 Using index Question&Answers:os...

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

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java - Http Servlet request lose params from POST body after read it once

I'm trying to accessing two http request parameters in a Java Servlet filter, nothing new here, but was ... using request.getParameter loses Form data. Thanks! Question&Answers:os...

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

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javascript - Unzipping files

I want to display OpenOffice files, .odt and .odp at client side using a web browser. These files are zipped files ... , but without success. How can I do this? Question&Answers:os...

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

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namespaces - What does a (backslash) do in PHP (5.3+)?

What does a do in PHP? For example, CSRF4PHP has FALSE, session_id, and Exception: public function __construct($timeout=300, ... not find session id', 1); } } Question&Answers:os...

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

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r - Getting the top values by group

Here's a sample data frame: d <- data.frame( x = runif(90), grp = gl(3, 30) ) I want the subset of d ... >% top_n(n = 5) How do I get the correct subset? Question&Answers:os...

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

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How do I register a custom URL protocol in Windows?

How do I register a custom protocol with Windows so that when clicking a link in an email or on a web page my ... the parameters from the URL are passed to it? Question&Answers:os...

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

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How does Cloneable work in Java and how do I use it?

I would like to know the following: Cloneable means we can have a clone or a copy of objects, by implementing ... happen if the object is a composite object? Question&Answers:os...

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

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subprocess - Stop reading process output in Python without hang?

I have a Python program for Linux almost looks like this one : import os import time process = os.popen("top"). ... Any I idea guys, I'm really stuck now ? Question&Answers:os...

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

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scheme - My code signals the error "application: not a procedure" or "call to non procedure"

During the execution of my code I get the following errors in the different Scheme implementations: Racket: application: ... non procedure application: (1 2 3) Question&Answers:os...

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

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arrays - Dynamic allocation of an unknown matrix in C

I need to take a file that is inputted by the user and multiply it by another file. That much I know ... I had that, dynamically allocating that was easy. Question&Answers:os...

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

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dictionary - How to define hash tables in Bash?

What is the equivalent of Python dictionaries but in Bash (should work across OS X and Linux). Question&Answers:os...

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

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Difference between DataFrame, Dataset, and RDD in Spark

I'm just wondering what is the difference between an RDD and DataFrame (Spark 2.0.0 DataFrame is a mere type ... Spark? Can you convert one to the other? Question&Answers:os...

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

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Windows batch files: .bat vs .cmd?

As I understand it, .bat is the old 16-bit naming convention, and .cmd is for 32-bit Windows, i.e., ... there some gotcha awaiting me by using the wrong suffix? Question&Answers:os...

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

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html - Is there a minlength validation attribute in HTML5?

It seems the minlength attribute for an <input> field doesn't work. Is there any other attribute in HTML5 with ... the minimal length of a value for fields? Question&Answers:os...

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

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cocoa - Best way to define private methods for a class in Objective-C

I just started programming Objective-C and, having a background in Java, wonder how people writing Objective-C programs ... I do not know if that's possible. Question&Answers:os...

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

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c# - Path.Combine for URLs?

Path.Combine is handy, but is there a similar function in the .NET framework for URLs? I'm looking for syntax ... return: "http://MyUrl.com/Images/Image.jpg" Question&Answers:os...

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

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css - How to deal with page breaks when printing a large HTML table

I have a project which requires printing an HTML table with many rows. My problem is the way the table is ... whole change I thought I could ask here before. Question&Answers:os...

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

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