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I am writing a recursive function that goes through a directory and copies every file and folder in it. The first ... how to get around this? See Question&Answers more detail:os...

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

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c# - How can I create an instance of an arbitrary Array type at runtime?

I'm trying to deserialize an array of an type unknown at compile time. At runtime I've discovered the type, ... t seem to have any constructor. See Question&Answers more detail:os...

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

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c - strlen() on non-null-terminated char string?

Is strlen(const char *s) defined when s is not null-terminated, and if so, what does it return? See Question&Answers more detail:os...

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

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css - How to remove margin from every element that is the last element in a row?

How to remove margin from every <li> of last column? I'm asking for every <li> which comes in last column ... : http://jsfiddle.net/GnUjA/1/ See Question&Answers more detail:os...

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

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Valgrind reports errors for a very simple C program

I'm learning C language from Learn C The Hard Way. I'm on exercise 6 and while I can make it work, ... How do I fix the valgrind errors? See Question&Answers more detail:os...

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

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vba - How to count up text of a different font colour in excel

I have a list of names that has been exported from another database into excel. The names in the list that ... help would be much appreciated! See Question&Answers more detail:os...

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

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prolog - Intersection and union of 2 lists

i'm starting up learning prolog (i use SWI-prolog) and i did a simple exercise in which i have 2 lists and ... better ways to do it. Thanks See Question&Answers more detail:os...

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

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scheme - How to do a powerset in DrRacket?

I'm using the beginning language with list abbreviations for DrRacket and want to make a powerset recursively but ... help would be good. See Question&Answers more detail:os...

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

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java - What does an integer that has zero in front of it mean and how can I print it?

class test{ public static void main(String args[]){ int a = 011; System.out.println(a); } } Why I am getting ... ? How can I get 011 as output? See Question&Answers more detail:os...

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

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python - Display realtime output of a subprocess in a tkinter widget

My question is almost the same as this one: Widget to Display subprocess stdout? but a step further. I have ... update its content in realtime ? See Question&Answers more detail:os...

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

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javascript - Understanding code flow with yield/generators

I've read over several examples of code using JavaScript generators such as this one. The simplest generator-using ... like when yield is used? See Question&Answers more detail:os...

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

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c# - Why DateTime.AddHours doesn't seem to work?

I have same result 1338161400 when I do DateTime origin = new DateTime(1970, 1, 1, 0, 0, 0, 0); ... But I got 1338147000 still not 1338168600 See Question&Answers more detail:os...

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

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assembly - What registers must be preserved by an x86 function?

I'm writing a function in x86 assembly that should be callable from c code, and I'm wondering which registers ... whatever pleases me in them? See Question&Answers more detail:os...

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

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c - What happens when a variable goes out of scope?

In most managed languages (that is, the ones with a GC), local variables that go out of scope are ... the local variables be freed? See Question&Answers more detail:os...

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

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fortran - Function has no implicit type

I am trying to learn to work with functions. I have the following code: program main implicit none write(*,*) ... at (1) has no IMPLICIT type See Question&Answers more detail:os...

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

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r - Operator == inconsistent in logical columns in data.table

Please see the following reproducible example: library(data.table) set.seed(123) DT <- data.table(A=rep(0.3, ... incorrect result, should be 3! See Question&Answers more detail:os...

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

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jsf - When using @EJB, does each managed bean get its own @EJB instance?

I am using JSF 2.2 for a web project and I am implementing the login page now. I have a login.xhtml ... like this in a production environment? See Question&Answers more detail:os...

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

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string - What does strcmp() exactly return in C?

I wrote this code in C: #include <stdio.h> #include <stdlib.h> #include <math.h> #include <string.h> int main() ... my laptop, it shows 1. Why? See Question&Answers more detail:os...

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

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perl - What is the difference between library files and modules?

What is the difference between library files and modules in Perl? See Question&Answers more detail:os...

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

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javascript - Creating and appending detached elements with d3.create

Let's say I create a simple graphic like this: <!doctype html> <html lang="en"> <head> <script src="https://d3js ... ; </script> </body> </html> See Question&Answers more detail:os...

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

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java - .gif image doesn't moves on adding it to the JTabbed pane

I have a JFrame. In that i have two containers i.e two JPanel. one Panel holds a image. other holds a ... TODO Auto-generated method stub } } See Question&Answers more detail:os...

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

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Move initial commits off master to another branch in Git

I'm trying to migrate to the GitFlow workflow, and I want rewrite the history of the repository so that all ... branch. Many thanks in advance. See Question&Answers more detail:os...

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

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ios - Extract UIImage from NSAttributed String

What I am doing is: NSATTRIBUTE STRING = NSSTRING + UIIMAGE's; NSDATA = NSATTRIBUTED STRING; ALSO I ... = from NSATTRIBUTED STRING; See Question&Answers more detail:os...

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

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c - Scanf won't execute for second time

I am trying:- To re-read the value if user enters an invalid value. But the problem is scanf() executes ... gcc command line at compile time. See Question&Answers more detail:os...

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

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javascript - jQuery - How to select by attribute

I have a HTML like this, <a id="a_1" href="#" disabled_onclick="true">Link1</a> <a id="a_2" href="# ... , two link tags and one input tag. See Question&Answers more detail:os...

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

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ios - Changing VC issue in Swift. How to pass data between views in tab bar controller?

I have four ViewController, I don't use an UITabbedbar because It's more difficult to customize. I use ... as SecondViewController; } } See Question&Answers more detail:os...

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

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javascript - focus doesn't work in IE

i have the following function function change() { var input = document.getElementById('pas'); var input2 = input. ... doesn't work in opera:( See Question&Answers more detail:os...

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

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javascript - Get the value of an object with an unknown single key in JS

How can I get the value of an object with an unknown single key? Example: var obj = {dbm: -45} I want ... there is a cleaner solution for this? See Question&Answers more detail:os...

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

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