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I'm new to CSS and have a simple login form that I'm trying to align correctly. Basically two columns with the ... submit"/> </form> </body> See Question&Answers more detail:os...

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

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ios - The advertisingIdentifier and identifierForVendor return "00000000-0000-0000-0000-000000000000"

I've implemented this methods to get advertisingIdentifier and identifierForVendor: - (NSString *) ... correct identifiers) See Question&Answers more detail:os...

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

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Make a Ruby program a daemon?

I want to write a Ruby program that will always be running in the background (a daemon) on my Mac. Can someone ... on how this would be done? 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++ - When should functions be member functions?

I have a colleague in my company whose opinions I have a great deal of respect for, but I simply cannot ... to use object oriented design)? See Question&Answers more detail:os...

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

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CORS Chrome Extension with manifest version 2

Is it possible to use CORS when writing a google chrome extension? I saw this, http://developer.chrome.com/ ... by Access-Control-Allow-Origin. See Question&Answers more detail:os...

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

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Calling SQL Defined function in C#

I have written this scalar function in TSQL: create function TCupom (@cupom int) returns float as begin declare @Tcu ... (); return SAIDA; } 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 - How LongAdder performs better than AtomicLong

I see how Java's AtomicInteger works internally with CAS (Compare And Swap) operation. Basically when ... understand how LongAdder works? See Question&Answers more detail:os...

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

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hadoop - Is it better to have one large parquet file or lots of smaller parquet files?

I understand hdfs will split files into something like 64mb chunks. We have data coming in streaming and we can ... having, say, 1gb files? See Question&Answers more detail:os...

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

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python - Append item to MongoDB document array in PyMongo without re-insertion

I am using MongoDB as the back-end database for Python web application (PyMongo + Bottle). Users can ... thoughts are greatly appreciated :) See Question&Answers more detail:os...

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

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python - int object is not iterable?

inp = int(input("Enter a number:")) for i in inp: n = n + i; print (n) ... throws an error: 'int' object ... + 0 = 2. How do I do that? Thanks See Question&Answers more detail:os...

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

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Select NA in a data.table in R

How do I select all the rows that have a missing value in the primary key in a data table. DT = data.table(x= ... work DT[is.na(x),] #does work See Question&Answers more detail:os...

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

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ElasticSearch - Get only matching nested objects with All Top level fields in search response

let say I have following Document: { id: 1, name: "xyz", users: [ { name: 'abc', surname ... select matching objects from array in elasticsearch See Question&Answers more detail:os...

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

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file io - PostgreSQL: export resulting data from SQL query to Excel/CSV

I need to export the resulting data from a query in PostgreSQL to Excel/CSV. I use PostgreSQL 8.2.11. SQL error ... )TO '"c:auto_new.txt"'; 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# - Automatically implemented property in struct can not be assigned

I have a next code: struct T { public T(int u) { this.U = 10; //Errors are here } public int U { ... to What I do wrong? Help me understand. 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 does one restore default case to a variable in VBA (Excel 2010)?

At some point I accidentally named a variable range (all lower-case) and since then the Visual Basic for ... I type Range is irritating. See Question&Answers more detail:os...

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

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mysql - How to use django models with foreign keys in different DBs?

I have 2 models for 2 different databases: Databases were created manually but it should change nothing. class ... model for different database? See Question&Answers more detail:os...

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

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php - Can I use file_get_contents() to compare two files?

I want to synchronize two directories. And I use file_get_contents($source) === file_get_contents($dest) to compare two ... problem to do this? 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# - How can I add my attributes to Code-Generated Linq2Sql classes properties?

I would like to add attributes to Linq 2 Sql classes properties. Such as this Column is browsable in the ... with classes being code-generated? See Question&Answers more detail:os...

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

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ios - Adding Convenience Initializers in Swift Subclass

As a learning exercise I am trying to implement a subclass of SKShapeNode that provides a new convenience initializer ... am I doing wrong? See Question&Answers more detail:os...

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

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arrays - Does go garbage collect parts of slices?

If I implement a queue like this... package main import( "fmt" ) func PopFront(q *[]string) string { r ... collector smart enough to free them? See Question&Answers more detail:os...

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

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591 views

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c - Sharing memory between processes through the use of mmap()

I'm in Linux 2.6. I have an environment where 2 processes simulate (using shared memory) the exchange of data ... this path. Thanks in advance! See Question&Answers more detail:os...

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

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Google PubSub - Counting messages in topic

I've looked over the documentation for Google's PubSub, and also tried looking in Google Cloud Monitoring, but couldn ... . What am I missing? See Question&Answers more detail:os...

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

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json - Using MVC3's AntiForgeryToken in HTTP GET to avoid Javascript CSRF vulnerability

In regards to this Haacked blog, I'm hesitant to implement the proposed anti-JSON GET hijacking solutions since The ... and yet are a risk. 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 get available wifi network name in iOS using swift

I want to get all the WiFi networks available in a region and their SSID value. But the problem is how to get ... if I am not connected to one. 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 - Howto avoid the "EACCES permission denied" ON SDCARD with KITKAT 4.4.2 Version. New policy from google

With the android kitkat 4.4.2 version is a new google policy implemented for writeaccess, which I do not understand ... version 4.4.2 KITKAT ? See Question&Answers more detail:os...

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

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370 views

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java - Maven: resource binary changes file size after build

I am using the appengine-maven-plugin to build my Java Google App Engine project. I include .p12 certificates in ... WAR? Thanks for your help. See Question&Answers more detail:os...

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

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Self Referencing Class Definition in python

is there any way to reference a class name from within the class declaration? an example follows: class Plan( ... in scope inside the class. 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 handle json DateTime returned from WCF Data Services (OData)

I believe I am missing something obvious here. When I request a JSON response from an OData service I get a different ... /yyyy h:mm tt"); } See Question&Answers more detail:os...

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

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