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Does each of C and C++ standards allow sizeof of numeric types not to be a power of two? The ... architecture behaving in a similar way? 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 - EL expressions won't executed in Tomcat 5.5, but working in tomcat 6.0.20

I am developing my application using spring-web-mvc... Now at my Controller it returns like this : public class ... ? 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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c# - Why generic IList<> does not inherit non-generic IList

IList<T> does not inherit IList where IEnumerable<out T> inherits IEnumerable. If out modifier are the only ... TKey, TValue> to IDictionary. See Question&Answers more detail:os...

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

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checksum - CRC Calculation Of A Mostly Static Data Stream

Background: I have a section of memory, 1024 bytes. The last 1020 bytes will always be the same. The ... hoping that something similar exists. 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 - Use SELECT inside an UPDATE query

How can I UPDATE a field of a table with the result of a SELECT query in Microsoft Access 2007. Here's ... = [Result of Select query] 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 - Mysqli get_result alternative

I've just changed all my sql queries to prepared statements using mysqli. To speed this process up I created ... get_result(), and how? 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 calculate Session and Session duration in Firebase Analytics raw data?

How to calculate Session Duration in Firebase analytics raw data which is linked to BigQuery? I have used the ... using Firebase and big query See Question&Answers more detail:os...

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

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javascript - getElementsByClassName vs querySelectorAll

if I use var temp = document.querySelectorAll(".class"); for (var i=0, max=temp.length; i<max; i+ ... not being forced to use querySelectorAll? See Question&Answers more detail:os...

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

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typescript - How to test if two types are exactly the same

Here is my first attempt: (playground link) /** Trigger a compiler error when a value is _not_ an exact ... .com/gcanti/typelevel-ts/issues/39 See Question&Answers more detail:os...

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

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.net - Marshalling a big-endian byte collection into a struct in order to pull out values

There is an insightful question about reading a C/C++ data structure in C# from a byte array, but I ... to the issue Mastering C# structs 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 typedef works for function pointers

I think I may be suffering from the dreaded "accidental programmer" disease, at least when it comes to typedefs ... (and maybe typedef too). 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 server - Sequence as default value for a column

I have already created a sequence: create sequence mainseq as bigint start with 1 increment by 1 How do I use ... code varchar(20) not null ) See Question&Answers more detail:os...

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

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Varargs in method overloading in Java

The following code doesn't compile. package varargspkg; public class Main { public static void test(int... i) { for ... . I'm using JDK 6. 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 - dll missing in JDBC

I am currently working with SQL in Java. Recently I got this error: com.microsoft.sqlserver.jdbc.AuthenticationJNI < ... special way to do it? 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 - Pandas join/merge/concat two dataframes

I am having issues with joins in pandas and I am trying to figure out what is wrong. Say I have a ... one time stamp that was duplicated. 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++ - Slot is being called multiple times every time a signal is emitted

I am using one signal and slot connection in a block. My code as follows in a.cpp { QObject::connect( ... me it should call only once. See Question&Answers more detail:os...

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

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url - encodeURI() in PHP?

Is there some encodeURI() function in PHP that does not encode: ~!@#$&*()=:/,;?+'? See Question&Answers more detail:os...

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

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datetime - How to compare two dates along with time in java

I have two Date objects with the below format. SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss ... I compare in Java. 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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accessibility - Creating Accessible UI components in Delphi

I am trying to retrieve accessible information from a standard VCL TEdit control. The get_accName() and Get_accDescription( ... .Text; end; 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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c# - No access to the Session information through SignalR Hub. Is my design is wrong?

I've just discovered you can't access the current session within the SignalR Hub. Simplified my scenario: I've ... use Session in this way? 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 - How to read bits from a file?

I know how to read bytes - x.read(number_of_bytes), but how can I read bits in Python? I have to read ... a binary file Any ideas or approach? See Question&Answers more detail:os...

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

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apk - Android Wear app not installing through handset

I'm trying to get a wearable app installed through an Android handset using the 'Package with Android Studio ... storeFile file('sameAsHandset/debug.keystore') storePassword '***'...

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

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r - Automatically create formulas for all possible linear models

Say I have a training set in a data frame train with columns ColA, ColB, ColC, etc. One of these columns ... involving columns of a data frame? See Question&Answers more detail:os...

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

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jquery - smooth auto scroll by using javascript

I am trying to implement some code on my web page to auto-scroll after loading the page. I used a ... // scrolls every 100 milliseconds } See Question&Answers more detail:os...

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

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visual studio 2010 - How to set SGEN toolpath in Msbuild to target 3.5 framework

I've just upgraded a project from VS2008 to VS2010 but I'm still targeting the 3.5 framework. In my project file ... it doesn't help me much. 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 - What happens with an extern inline function?

What happens if I define the function in my .h file as extern int returnaint(void); define it in the related .c ... not ignore it in this case? 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# - OutOfMemoryException on declaration of Large Array

I have to create a fairly large double array 12000ish x 55000ish. Unfortunately, I get an out of memory exception. I ... ? I am using VS 2008. 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++ - What is the meaning of numeric_limits<double>::digits10

What is the precise meaning of numeric_limits::digits10? Some other related questions in stackoverflow made me think it ... readDouble)<0.1; } See Question&Answers more detail:os...

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

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