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java - printf %f with only 2 numbers after the decimal point?

In my printf, I need to use %f but I'm not sure how to truncate to 2 decimal places: Example: getting 3.14159 to print as: 3.14 See Question&Answers more detail:os...

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Tomcat: LifecycleException when deploying

I just downloaded the Tomcat 7.0.23 package on my Ubuntu 11.10. I followed the instructions on a Google API ... mod of all files to 777). See Question&Answers more detail:os...

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java - No results returned by the Query error in PostgreSQL

I am trying to insert a data into a table. After executing the query i am getting an exception stating org. ... i am getting this exception ?? 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# - Comparing boxed value types

Today I stumbled upon an interesting bug I wrote. I have a set of properties which can be set through a general ... Isn't there an easier way? See Question&Answers more detail:os...

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c++ - Can a std::string contain embedded nulls?

For regular C strings, a null character '' signifies the end of data. What about std::string, can I have a string with embedded null characters? See Question&Answers more detail:os...

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android - Add Google Play Services to Eclipse project

I've red a number of posts and articles but it's not working for me. I am not able to add/use ... Play Services is giving an unresolved error. See Question&Answers more detail:os...

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oracle - SQL Error: ORA-00933: SQL command not properly ended

I am trying to update a record in oracle SQL developer by using Joins. Following is my query- UPDATE ... the error reason and solution See Question&Answers more detail:os...

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objective c - How do I weak link frameworks on Xcode 4?

I need to weak link some framework with my target. But I can't find how to do it... If I try to run ... /iAd Reason : Image not found Thanks ! See Question&Answers more detail:os...

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Java Swing adding Action Listener for EXIT_ON_CLOSE

I have a simple GUI: public class MyGUI extends JFrame{ public MyGUI(){ run(); } void run(){ setSize(100, 100) ... pressed). How can I do that? See Question&Answers more detail:os...

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operators - Is the behaviour of Python's list += iterable documented anywhere?

It would appear that in Python, list += x works for any iterable x: In [6]: l = [] In [7]: l ... list. This is spelled out in the documentation. See Question&Answers more detail:os...

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c# - The limitation on the size of .Net array

I heard that there is a hard limit on the size of .Net Array. It is said that the maximum amount of ... correct or not. Anyone can confirm? See Question&Answers more detail:os...

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java - How to modify the header of a HttpUrlConnection

Im trying to improve the Java Html Document a little but i'm running into problems with the HttpUrlConntion. ... the default HTTP Handler? See Question&Answers more detail:os...

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c - What does a for loop without curly braces do?

Hi so basically my question is what does a for loop without any curly braces around it do? So from what I ... Or am I missing something here. See Question&Answers more detail:os...

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.net - Overcome OS Imposed Windows Form Minimum Size Limit

In an application I am developing, I need to be able to make a windows form smaller than the minimum height ... after I change the height). See Question&Answers more detail:os...

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reporting services - SSRS 2005 Set SimplePageHeaders on the report instead of the server?

I have one report that does not export to excel friendly from SSRS 2005. I know I can use <Render> <Extension ... not in an app or website. See Question&Answers more detail:os...

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objective c - Prompt login alert with Twitter framework in iOS5?

As you all may know, since iOS5 there is a native Twitter framework which make it easy to post tweets from your ... Billy (My first post on SO) See Question&Answers more detail:os...

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jQuery Ajax passing value on php same page

I am kinda confused on it, when trying to send value on the same page. <script> $("select[name='sweets'] ... the body it will display null. See Question&Answers more detail:os...

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rust - How do I use floating point number literals when using generic types?

Regular float literals do not work: extern crate num_traits; use num_traits::float::Float; fn scale_float<T: Float>(x ... ` found type `{float}` See Question&Answers more detail:os...

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angular - Angular2 - Interaction between components using a service

I have two component A and B, where component A contains a button. I wish when user click on this button, fire ... the right way to achieve it ? See Question&Answers more detail:os...

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ant - Ivy, what is the master configuration and why is it not pulling jvyaml?

I have the following ivy file: <configurations defaultconfmapping="buildtime"> <conf name="buildtime" visibility=" ... but not solr? Thanks See Question&Answers more detail:os...

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matplotlib - Adding a second y-axis related to the first y-axis

I hope one of you may be able to help. I have a plot with one y-axis value and one x-axis corresponding to ... their y1 values on the y-axis? See Question&Answers more detail:os...

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swift - ARKit – What do the different columns in Transform Matrix represent?

An ARAnchor's 4x4 matrix has 4 columns. The fourth column of the matrix contains 3 translate values for x, y ... the other 3 columns represent? See Question&Answers more detail:os...

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python - Chromedriver, Selenium - Automate downloads

I am using Selenium 2.43.0 with Python 2.7.5. At one point, the test clicks on a button which sends form ... , Chrome (browser) 38.0.02125.122 See Question&Answers more detail:os...

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How Can I Sort A 'Version Number' Column Generically Using a SQL Server Query

I wonder if the SQL geniuses amongst us could lend me a helping hand. I have a column VersionNo in a ... Your help would be much appreciated. See Question&Answers more detail:os...

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What are the details for using CF_SQL_NVARCHAR in ColdFusion 10?

The ColdFusion 10 documentation on Updating Your Database has a section on Database-related enhancements in ... with something official? See Question&Answers more detail:os...

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c# - Extract all strings between two strings

I'm trying to develop a method that will match all strings between two strings: I've tried this but it returns ... Thank you for your help ! See Question&Answers more detail:os...

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powershell - Using Get-ChildItem -Exclude or -Include returns nothing

I have a list in my C: directory that has many files. If I try to run an -Exclude on it, I get no returns. Same ... 7/8/2016 8:30 AM 0 Test.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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how to do autocomplete="off" at form level in JSF

how to do autocomplete="off" at form level in JSF? See Question&Answers more detail:os...

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

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