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uitableview - iOS 7 - How to display a date picker in place in a table view?

In WWDC 2013 video, Apple suggests displaying picker in place in a table view in iOS 7. How to insert and ... cells? Like this, from the Apple calendar app: Question&Answers:os...

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

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How do I change the data type for a column in MySQL?

I want to change the data type of multiple columns from float to int. What is the simplest way to do this? There is no data to worry about, yet. Question&Answers:os...

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

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javascript - typescript - cloning object

I have a super class that is the parent (Entity) for many subclass (Customer, Product, ProductCategory...) I' ... would like to get rid of the transpiled error Question&Answers:os...

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

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what is the Class object (java.lang.Class)?

The Java documentation for Class says: Class objects are constructed automatically by the Java Virtual Machine as ... don't inherit from java.lang.Class? Question&Answers:os...

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

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333 views

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string - Alphabet range in Python

Instead of making a list of alphabet characters like this: alpha = ['a', 'b', 'c', 'd'.........'z'] ... numbers it can be grouped using range(): range(1, 10) Question&Answers:os...

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

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notepad++ - Regex: Remove lines containing "help", etc

I have a long document of commands. Using Notepad++ or regex, I want to delete all lines containing "help" including keyboard_help, etc. How can this be done? Question&Answers:os...

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

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java - How to check certificate name and alias in keystore files?

I have a bunch of .keystore files and need to find one with specific CN and alias. Is there a way to do ... the alias and certificate name in each of the files. Question&Answers:os...

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

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java - Why there is no ConcurrentHashSet against ConcurrentHashMap

HashSet is based on HashMap. If we look at HashSet<E> implementation, everything is been managed under ... ConcurrentHashMap and leaving the rest as is? Question&Answers:os...

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

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bash - Running multiple commands with xargs

cat a.txt | xargs -I % echo % In the example above, xargs takes echo % as the command argument. But in ... because it is complex. Is there a better solution? Question&Answers:os...

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

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MySQL high CPU usage

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

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c# - How can I get the assembly file version

In AssemblyInfo there are two assembly versions: AssemblyVersion: Specify the version of the assembly being attributed. ... I get the Assembly File Version? Question&Answers:os...

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

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c++ - Meaning of = delete after function declaration

class my_class { ... my_class(my_class const &) = delete; ... }; What does = delete mean in that context? Are ... "modifiers" (other than = 0 and = delete)? Question&Answers:os...

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

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How to obtain Signing certificate fingerprint (SHA1) for OAuth 2.0 on Android?

I'm trying to register my android app following the steps in https://developers.google.com/console/help/ ... Can I use a debug certificate first? Question&Answers:os...

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

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javascript - How to check whether an object is a date?

I have an annoying bug in on a webpage: date.GetMonth() is not a function So, I suppose that I am doing ... to the method getFormatedDate() is of type Date. Question&Answers:os...

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

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python - How to change dataframe column names in pyspark?

I come from pandas background and am used to reading data from CSV files into a dataframe and then simply changing the ... pandas ? My spark version is 1.5.0 Question&Answers:os...

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

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c++ - Why does pow(5,2) become 24?

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Question&Answers:os...

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

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python - Why does this not work as an array membership test?

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

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php - How can I detect a create, update, delete query is successful in Codeigniter

I am currently writing a controller method like this: public function delete($user_id) { if ($this->input->server( ... that the update query is success or not? Question&Answers:os...

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

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algorithm - How can I simplify this working Binary Search code in C?

Hey guys started programming in C few weeks ago learning about algothiritms, just wondering how would you make my code more ... true; } else { return false; } } Question&Answers:os...

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

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How to store Node.js deployment settings/configuration files?

I have been working on a few Node apps, and I've been looking for a good pattern of storing ... or does everyone just hack something together themselves? Question&Answers:os...

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

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346 views

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Find when a file was deleted in Git

I have a Git repository with n commits. I have a file that I need, and that used to be in the repository, and ... that HAS that file, so I can get it back? Question&Answers:os...

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

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ios - What are the Dangers of Method Swizzling in Objective-C?

I have heard people state that method swizzling is a dangerous practice. Even the name swizzling suggests that ... the risk by sensibly naming swizzled methods. Question&Answers:os...

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

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538 views

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rsa - What is the difference between encrypting and signing in asymmetric encryption?

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Question&Answers:os...

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

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javascript - How do I check if string contains substring?

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

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293 views

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Exposing a port on a live Docker container

I'm trying to create a Docker container that acts like a full-on virtual machine. I know I can use ... server running in the container, without restarting it? Question&Answers:os...

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

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Difference between object and class in Scala

I'm just going over some Scala tutorials on the Internet and have noticed in some examples an object is ... the difference between class and object in Scala? Question&Answers:os...

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

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c - How to count character occurrences using SIMD

I am given a array of lowercase characters (up to 1.5Gb) and a character c. And I want to find how many occurrences are ... { sum+=*(ptr+i); } } return sum; } Question&Answers:os...

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

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typescript - How to write PickByValue type?

The Pick type is included with TypeScript. It's implementation is as follows: type Pick<T, K extends keyof T> = { ... >; // IncludedKeys = 'includeMe' | 'andMe' Question&Answers:os...

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

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