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php - How to fix Error: laravel.log could not be opened?

I'm pretty new at laravel, in fact and I'm trying to create my very first project. for some reason I keep getting ... chmod -R 775 storage didn't help at all. Question&Answers:os...

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

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How can I reverse a NSArray in Objective-C?

I need to reverse my NSArray. As an example: [1,2,3,4,5] must become: [5,4,3,2,1] What is the best way to achieve this? Question&Answers:os...

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

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175 views

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c++ - How to correctly implement custom iterators and const_iterators?

I have a custom container class for which I'd like to write the iterator and const_iterator classes. I never did ... 't use it here, for many stupid reasons. Question&Answers:os...

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

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How can I get a JavaScript stack trace when I throw an exception?

If I throw a JavaScript exception myself (eg, throw "AArrggg"), how can I get the stack trace (in Firebug or ... which includes the calls to foo, bar, bar. Question&Answers:os...

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

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219 views

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Which Eclipse files belong under version control?

Which Eclipse files is it appropriate to put under source control, aside from the sources obviously? In my ... which it depends, please explain your guidelines. Question&Answers:os...

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

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model view controller - How does differential execution work?

I've seen a few mentions of this on Stack Overflow, but staring at Wikipedia (the relevant page has since ... need to try implementing it in another language. Question&Answers:os...

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

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hashmap - java.lang.OutOfMemoryError: GC overhead limit exceeded

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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How to find the Number of CPU Cores via .NET/C#?

Is there a way via .NET/C# to find out the number of CPU cores? PS This is a straight code question, not a "Should I use multi-threading?" question! :-) Question&Answers:os...

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

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Failed to load AppCompat ActionBar with unknown error in android studio

Below is my xml file. In preview there is two error'Failed to load AppCompat ActionBar with unknown ... /> </android.support.design.widget.CoordinatorLayout> Question&Answers:os...

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

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.net - The model backing the <Database> context has changed since the database was created

The error message : "The model backing the 'AddressBook' context has changed since the database was created. Either ... the context. Am I missing anything here? Question&Answers:os...

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

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188 views

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memory - "register" keyword in C?

What does the register keyword do in C language? I have read that it is used for optimizing but is not clearly ... relevant and if so, when would you use it? Question&Answers:os...

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

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python - Executing multi-line statements in the one-line command-line?

I'm using Python with -c to execute a one-liner loop, i.e.: $ python -c "for r in range(10): print 'rob' ... a one-liner so that I can include it in a Makefile. Question&Answers:os...

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

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81 views

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java - How to get parameters from the URL with JSP

In JSP how do I get parameters from the URL? For example I have a URL www.somesite.com/Transaction_List. ... like there is for sessions or something similar? 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 if an object is nullable?

How do I check if a given object is nullable in other words how to implement the following method... ... nullable and create a nullable wrapper around obj. Question&Answers:os...

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

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Regex Named Groups in Java

It is my understanding that the java.regex package does not have support for named groups (http://www.regular ... (admittedly I only tried briefly) under java5. Question&Answers:os...

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

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179 views

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java - explicit casting from super class to subclass

public class Animal { public void eat() {} } public class Dog extends Animal { public void eat() {} public ... . Why can't the compiler detect this error? Question&Answers:os...

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

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569 views

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android - Read logcat programmatically within application

I want to read and react to logcat logs within my application. I found the following code: try { Process ... to continuously listen to even new logcat logs? Question&Answers:os...

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

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60 views

1 answer

javascript - Set timeout for ajax (jQuery)

$.ajax({ url: "test.html", error: function(){ //do something }, success: function(){ //do something } }); ... is down for a little time, it will never end. Question&Answers:os...

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

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360 views

1 answer

objective c - IBOutlet and IBAction

What is the purpose of using IBOutlets and IBActions in Xcode and Interface Builder? Does it make any difference if I don't ... :(id)sender { /* ... */ } Question&Answers:os...

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

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342 views

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Keyboard Interrupts with python's multiprocessing Pool

How can I handle KeyboardInterrupt events with python's multiprocessing Pools? Here is a simple example: from ... all of the processes to exit gracefully. Question&Answers:os...

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

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102 views

1 answer

java - Modify request parameter with servlet filter

An existing web application is running on Tomcat 4.1. There is an XSS issue with a page, but I can ... parameter before passing the request down the chain? Question&Answers:os...

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

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56 views

1 answer

ios - How to parse a JSON file in swift?

I have a JSON file, want to parse and use list of objects in table view. Can any one share the code to parse JSON file in swift. Question&Answers:os...

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

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1.2k views

1 answer

use jQuery's find() on JSON object

Similar to brnwdrng's question, I'm looking for a way to search through a JSON-like object. supposing my ... based on some criteria without using 'each'? Question&Answers:os...

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

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225 views

1 answer

What's the difference between 'git merge' and 'git rebase'?

What's the difference between git merge and git rebase? Question&Answers:os...

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

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1 answer

How do I print a list of "Build Settings" in Xcode project?

Alternate Titles List of Xcode build variables Print a list of Xcode Build Settings Clang Environment Variables Canonical ... can be used in Build Rules etc? Question&Answers:os...

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

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563 views

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msysgit - How do I force git to use LF instead of CR+LF under windows?

I want to force git to checkout files under Windows using just LF not CR+LF. I checked the two configuration ... config --list | grep crlf core.autocrlf=input Question&Answers:os...

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

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286 views

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unix - What are file descriptors, explained in simple terms?

What would be a more simplified description of file descriptors compared to Wikipedia's? Why are they required? Say, ... than one file descriptor. If yes, why? Question&Answers:os...

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

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449 views

1 answer

ios - How do you trigger a block after a delay, like -performSelector:withObject:afterDelay:?

Is there a way to call a block with a primitive parameter after a delay, like using performSelector:withObject: ... but with an argument like int/double/float? Question&Answers:os...

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

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