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Convert a date format in PHP

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asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Looping through array and removing items, without breaking for loop

I have the following for loop, and when I use splice() to remove an item, I then get that 'seconds' is undefined. I ... 0) { Auction.auctions.splice(i, 1); } } Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Microsoft Visual C++ 14.0 is required (Unable to find vcvarsall.bat)

I've installed Python 3.5 and while running pip install mysql-python it gives me the following error error ... and installing the modules correctly via pip. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Why does += behave unexpectedly on lists?

The += operator in python seems to be operating unexpectedly on lists. Can anyone tell me what is going ... operator is called a "compound assignment operator". Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Return row only if value doesn't exist

I have 2 tables - reservation: id | some_other_column ----+------------------ 1 | value 2 | ... with NOT cancelled, since the simple WHERE doesn't work here. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ado.net - How do I view the SQL generated by the Entity Framework?

How do I view the SQL generated by entity framework ? (In my particular case I'm using the mysql provider - if it matters) Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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rust - How do I create a global, mutable singleton?

What is the best way to create and use a struct with only one instantiation in the system? Yes, this is ... way to do this, while keeping syntax terse. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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What is the Java string pool and how is "s" different from new String("s")?

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asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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rest - What exactly is RESTful programming?

What exactly is RESTful programming? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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jsf - javax.faces.application.ViewExpiredException: View could not be restored

I have written simple application with container-managed security. The problem is when I log in and open another ... at java.lang.Thread.run(Thread.java:619) Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How do I copy a file in Python?

How do I copy a file in Python? I couldn't find anything under os. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Launch custom android application from android browser

Can anybody please guide me regarding how to launch my android application from the android browser? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Generating all permutations of a given string

What is an elegant way to find all the permutations of a string. E.g. permutation for ba, would be ... as abcdefgh? Is there any Java implementation example? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql - Is it possible to insert multiple rows at a time in an SQLite database?

In MySQL you can insert multiple rows like this: INSERT INTO 'tablename' ('column1', 'column2') VALUES ('data1', ... database? What is the syntax to do that? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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gradle - Android Studio: Add jar as library?

I'm trying to use the new Android Studio but I can't seem to get it working correctly. I'm using ... . Does anyone know what I'm doing wrong? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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css - Click through div to underlying elements

I have a div that has background:transparent, along with border. Underneath this div, I have more elements. ... that I can click on the underlying elements. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to make a class JSON serializable

How to make a Python class serializable? A simple class: class FileItem: def __init__(self, fname): self ... ' is not JSON serializable Without the error Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to import a module given its name as string?

I'm writing a Python application that takes as a command as an argument, for example: $ python myapp.py command1 ... it each time a new command module is added. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Browser can't access/find relative resources like CSS, images and links when calling a Servlet which forwards to a JSP

I'm having trouble with loading CSS and images and creating links to other pages when I have a servlet ... >/HomeServlet</url-pattern> </servlet-mapping> Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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193 views

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python - Interactively validating Entry widget content in tkinter

What is the recommended technique for interactively validating content in a tkinter Entry widget? I've read ... and only validate on FocusOut events? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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162 views

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html - CSS - Equal Height Columns?

In CSS, I can do something like this: But I've no idea how to change that to something like: Is ... explicitly specifying the height (let the content grow)? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Counting the occurrences / frequency of array elements

In Javascript, I'm trying to take an initial array of number values and count the elements inside it. Ideally, ... . Any help would be appreciated! Thanks :) Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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195 views

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Table name as a PostgreSQL function parameter

I want to pass a table name as a parameter in a Postgres function. I tried this code: CREATE OR REPLACE FUNCTION ... same time? And how could this be solved? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Regex match entire words only

I have a regex expression that I'm using to find all the words in a given block of content, case insensitive, ... the beginning, middle, or end of a sentence? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Is segmentation fault actual undefined behavior when we refer to a non-static data-member

I had read the following rule and I've been trying to write an example, which reflects one. The rule is from ... //2 produced segmentation fault, which is UB? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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xml - XSLT Transform doesn't work until I remove root node

I'm trying to extract the headline from the below XML from the Met Office web service using XSLT, however my XSLT ... that's how they present it. Any ideas? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - What causes and what are the differences between NoClassDefFoundError and ClassNotFoundException?

What is the difference between NoClassDefFoundError and ClassNotFoundException? What causes them to be thrown? How ... I need more clarity and understanding. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Accessing inactive union member and undefined behavior?

I was under the impression that accessing a union member other than the last one set is UB, but I can't ... from the standard). So, is it undefined behavior? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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