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601 views

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double quotes - What is the difference between ' and " in Prolog?

I am new to Prolog and noticed that ' and " give different behavior, but am curious as to why. Specifically, when loading ... , while ?- ["test1.pl"]. doesn't. 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

vim - How do I make Git use the editor of my choice for commits?

I would prefer to write my commit messages in Vim, but it is opening them in Emacs. How do I configure Git ... do this globally, not just for a single project. Question&Answers:os...

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

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275 views

1 answer

shell - How to delete from a text file, all lines that contain a specific string?

How would I use sed to delete all lines in a text file that contain a specific string? Question&Answers:os...

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

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523 views

1 answer

html - <meta charset="utf-8"> vs <meta http-equiv="Content-Type">

In order to define charset for HTML5 Doctype, which notation should I use? Short: <meta charset="utf-8" /> Long: ... Type" content="text/html; charset=utf-8" /> Question&Answers:os...

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

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92 views

1 answer

javascript - What does [object Object] mean?

I am trying to alert a returned value from a function and I get this in the alert: [object Object] Here is ... is the function which I am trying to check on. Question&Answers:os...

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

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230 views

1 answer

Transposing multidimensional arrays in PHP

How would you flip 90 degrees (transpose) a multidimensional array in PHP? For example: // Start with this array ... loops is the best solution in this case.) Question&Answers:os...

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

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220 views

1 answer

c - How to debug using gdb?

I am trying to add a breakpoint in my program using b {line number} but I am always getting an error that says: ... . Use the "file" command. What should I do? Question&Answers:os...

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

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167 views

1 answer

html - CSS: Width in percentage and Borders

I've defined widths of the containers in percentage. I'd like to add a border (3px on right side of a width), ... the width to 29%, but I want to do precisely. Question&Answers:os...

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

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301 views

1 answer

java - Do we have any generic function to check if page has completely loaded in Selenium

I am trying to check if web page is loaded completed or not (i.e. checking that all the control is loaded ... etc but I am looking for some generic solution Question&Answers:os...

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

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232 views

1 answer

ios - DateFormatter doesn't return date for "HH:mm:ss"

Here is the code excerpt: func mapping(map: Map) { time <- (map["time"], TransformOf<Date, String>(fromJSON: { let ... iPod 10.1.1 (2016). This is so weird. Question&Answers:os...

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

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110 views

1 answer

Static variables in JavaScript

How can I create static variables in Javascript? Question&Answers:os...

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

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244 views

1 answer

.net - In C#, what is the difference between public, private, protected, and having no access modifier?

All my college years I have been using public, and would like to know the difference between public, private, ... does static do as opposed to having nothing? Question&Answers:os...

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

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409 views

1 answer

bash - When do we need curly braces around shell variables?

In shell scripts, when do we use {} when expanding variables? For example, I have seen the following: var=10 ... just style? Is one preferred over the other? Question&Answers:os...

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

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61 views

1 answer

How do you parse and process HTML/XML in PHP?

How can one parse HTML/XML and extract information from it? Question&Answers:os...

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

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191 views

1 answer

java - Difference between HashMap, LinkedHashMap and TreeMap

What is the difference between HashMap, LinkedHashMap and TreeMap in Java? I don't see any difference in the output as ... (lm.keySet()); print(lm.values()); Question&Answers:os...

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

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79 views

1 answer

javascript - map function for objects (instead of arrays)

I have an object: myObject = { 'a': 1, 'b': 2, 'c': 3 } I am looking for a native method, similar to ... Node.JS, so I don't care about cross-browser issues.) Question&Answers:os...

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

0 votes

544 views

1 answer

c# - What's the difference between Invoke() and BeginInvoke()

Just wondering what the difference between BeginInvoke() and Invoke() are? Mainly what each one would be used for. ... a delegate? or are they the same thing? Question&Answers:os...

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

0 votes

864 views

1 answer

text formatting - How to output numbers with leading zeros in JavaScript?

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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246 views

1 answer

bash - What is the difference between $(command) and `command` in shell programming?

To store the output of a command as a variable in sh/ksh/bash, you can do either var=$(command) or var ... What's the difference if any between the two methods? Question&Answers:os...

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

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68 views

1 answer

How to set time zone of a java.util.Date?

I have parsed a java.util.Date from a String but it is setting the local time zone as the time zone of the date ... zone of the date object. How can I do that? Question&Answers:os...

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

0 votes

312 views

1 answer

Java Swing revalidate() vs repaint()

I'm putting together a Swing application where I often want to replace the contents of a JPanel. To do this, I'm ... if not, when should I call each of them? Question&Answers:os...

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

0 votes

125 views

1 answer

javascript - How can I make console.log show the current state of an object?

In Safari with no add-ons (and actually most other browsers), console.log will show the object at the last state of ... false; console.log(test); // {a: false} Question&Answers:os...

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

0 votes

101 views

1 answer

Sleep in JavaScript - delay between actions

Is there a way I can do a sleep in JavaScript before it carries out another action? Example: var a = 1+3; // ... before the next action here var b = a + 4; Question&Answers:os...

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

0 votes

121 views

1 answer

python - Parse date string and change format

I have a date string with the format 'Mon Feb 15 2010'. I want to change the format to '15/02/2010'. How can I do this? Question&Answers:os...

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

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336 views

1 answer

Apache is downloading php files instead of displaying them

OS and server information: CentOS 6.4 (Final) Apache 2.2.15 PHP 5.5.1 I previously had php 5.3.x installed ... . I added AddType text/html .php but no luck. Question&Answers:os...

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

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148 views

1 answer

sql - Simple PHP Pagination script

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)

0 votes

84 views

1 answer

How to set a Timer in Java?

How to set a Timer, say for 2 minutes, to try to connect to a Database then throw exception if there is any issue in connection? Question&Answers:os...

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

0 votes

259 views

1 answer

JavaScript "new Array(n)" and "Array.prototype.map" weirdness

I've observed this in Firefox-3.5.7/Firebug-1.5.3 and Firefox-3.6.16/Firebug-1.6.2 When I fire up Firebug: var x = new ... () { return 0; }) ) // [0, 0, 0] Question&Answers:os...

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

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