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objective c - How to get device make and model on iOS?

I was wondering if it's possible to determine what kind of iPhone (for example) the currentdevice is? I know it's ... stuff). So yeah, let me know, thank you! Question&Answers:os...

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

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c# - Join/Where with LINQ and Lambda

I'm having trouble with a query written in LINQ and Lambda. So far, I'm getting a lot of errors here's my code: ... , so I'm not sure if this query is correct. Question&Answers:os...

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

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ios - How do you use NSAttributedString?

Multiple colours in an NSString or NSMutableStrings are not possible. So I've heard a little about the ... using hardcoded NSRange values won't work. Question&Answers:os...

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

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sorting - Why is there no SortedList in Java?

In Java there are the SortedSet and SortedMap interfaces. Both belong to the Java Collections framework and provide a ... idea why it is designed like that? Question&Answers:os...

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

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ruby on rails - SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed

I am using Authlogic-Connect for third party logins. After running appropriate migrations, Twitter/Google/yahoo logins seem ... :37:in `update' Please suggest.. Question&Answers:os...

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

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c++ - What is the bit size of long on 64-bit Windows?

Not to long ago, someone told me that long are not 64 bits on 64 bit machines and I should always use int. ... otherwise do a check on the target CPU bitsize? Question&Answers:os...

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

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javascript - React Hook Warnings for async function in useEffect: useEffect function must return a cleanup function or nothing

I was trying the useEffect example something like below: useEffect(async () => { try { const response = ... for examples. https://codesandbox.io/s/24rj871r0p Question&Answers:os...

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

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import - Android Studio suddenly cannot resolve symbols

Android Studio 0.4.2 was working fine and today I opened it and almost everything was red and the ... autocomplete working!! Does anyone have any suggestions? Question&Answers:os...

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

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c# - How to check for file lock?

This question already has answers here: Question&Answers:os...

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

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r - Selecting data frame rows based on partial string match in a column

I want to select rows from a data frame based on partial match of a string in a column, e.g. column 'x' ... doesn't work. Can somebody please help me with this? Question&Answers:os...

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

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date - Check time difference in Javascript

How would you check time difference from two text-boxes in Javascript? Question&Answers:os...

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

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sql - Unpivot with column name

I have a table StudentMarks with columns Name, Maths, Science, English. Data is like Name, Maths, Science, English ... in (Maths, Science, English) ) as UnPvt Question&Answers:os...

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

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Filtering on Include in EF Core

I'm trying to filter on the initial query. I have nested include leafs off a model. I'm trying to filter based on a ... .Where(w => w.post.Author == "me")? Question&Answers:os...

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

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java - System.console() returns null

I was using readLine of BufferedReader to get input/new password from user, but wanted to mask the password so ... "Java Application". Is there any workaround? Question&Answers:os...

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

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mingw - Why pow(10,5) = 9,999 in C++

Recently i write a block of code: const int sections = 10; for(int t= 0; t < 5; t++){ int i = ... 1 Does anyone give me an explaination? thanks you very much! Question&Answers:os...

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

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Relational algebra for banking scenario

I don't know how to solve the relational algebra questions. Deposit (Branch, Acc-No, Cust-Name, Balance) Loan (Branch, ... > 2000 ∧ branch = 'Romford' (Loan) ) Question&Answers:os...

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

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java - Understanding Spring @Autowired usage

I am reading the spring 3.0.x reference documentation to understand Spring Autowired annotation: 3.9.2 @Autowired and ... Red class will be called and not Blue? Question&Answers:os...

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

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eclipse - Android Min SDK Version vs. Target SDK Version

When it comes to developing applications for Android, what is the difference between Min and Target SDK version? ... Min and Target versions are the same! Question&Answers:os...

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

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debugging - What are Java command line options to set to allow JVM to be remotely debugged?

I know there's some JAVA_OPTS to set to remotely debug a Java program. What are they and what do they mean ? Question&Answers:os...

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

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language features - Are there legitimate uses for JavaScript's "with" statement?

Alan Storm's comments in response to my answer regarding the with statement got me thinking. I've seldom ... Where have you found the with statement useful? Question&Answers:os...

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

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python - How to emulate a do-while loop?

I need to emulate a do-while loop in a Python program. Unfortunately, the following straightforward code does not ... = i.next() except StopIteration : break Question&Answers:os...

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

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170 views

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How can I send an email by Java application using GMail, Yahoo, or Hotmail?

Is it possible to send an email from my Java application using a GMail account? I have configured my company ... using Hotmail, Yahoo or GMail are acceptable. Question&Answers:os...

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

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python - How to load all modules in a folder?

Could someone provide me with a good way of importing a whole directory of modules? I have a structure like this: /Foo ... it didn't work the way I had hoped. Question&Answers:os...

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

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tabwidget - Android: Tabs at the BOTTOM

I've seen some chatter about this, but nothing definite. Is there a way to put the tabs in a TabWidget ... the tabwidget's gravity to "bottom" Thanks! llappall Question&Answers:os...

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

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Any way to replace characters on Swift String?

I am looking for a way to replace characters in a Swift String. Example: "This is my string" I would like to ... This+is+my+string". How can I achieve this? Question&Answers:os...

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

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Which is the preferred way to concatenate a string in Python?

Since Python's string can't be changed, I was wondering how to concatenate a string more efficiently? I can ... would be did something change in Python 3? Question&Answers:os...

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

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544 views

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mysql - SELECT list is not in GROUP BY clause and contains nonaggregated column .... incompatible with sql_mode=only_full_group_by

AM using MySQL 5.7.13 on my windows PC with WAMP Server Here my Problem is While executing this query SELECT * FROM ` ... --------------------+ Question&Answers: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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Which MySQL data type to use for storing boolean values

Since MySQL doesn't seem to have any 'boolean' data type, which data type do you 'abuse' for storing ... advantages/disadvantages by using one type or another? Question&Answers:os...

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

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