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I read some GCC bugreport and people there were talking about "vstring". Searching the WEB I came to notice http: ... it instead of std::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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garbage collection - Java: How do you really force a GC using JVMTI's ForceGargabeCollection?

I'm not looking for the usual "you can only hint the GC in Java using System.gc()" answers, this ... compilable example would be most welcome. See Question&Answers more detail:os...

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

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Upper memory limit for PHP/Apache

I'm getting the error when I run my PHP script.... Fatal error: Out of memory (allocated 1827405824) (tried to ... and I estimate I need 2.7GB See Question&Answers more detail:os...

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

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How to find the index of a row in a table using jquery

I'm trying to find the index of a row in a table. I'm trying to use the following code, but I seem to get ... >click</td></tr> </tbody> 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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floating point - Javascript float subtract

I was wondering how can I subtract two negative Floating-Point numbers in javascript. I tried: alert(-0.2-0.1); and the ... to do to get -0.3 ? See Question&Answers more detail:os...

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

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javascript - How to use Web Speech API at chromium?

How to use SpeechSynthesisUtterance() and window.speechSynthesis.speak() at chromium browser? var msg = new ... text to audio 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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c - Variadic function (va_arg) doesn't work with float?

I have a variadic function which takes a float parameter. Why doesn't it work? va_arg(arg, float) 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 - Reverse Array Order

I am trying to reverse the order of an Array in java. What is the most efficient way to do so in O(n) ... you Edit: no this is not homework. 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# - Opening a WinForms Form with TopMost = true but not having it steal focus?

I have a form that pops up on a user's screen and has TopMost=true, but it steals the focus. How can ... not steal focus when it first appears? 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 - How to prevent public methods from being called from specific classes

I have an existing class into which I want to add a method. But I want the method to be called only ... solution like a pattern or something. 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 - CompletableFuture already completed with an exception

CompletableFuture.completedFuture() returns a CompletedFuture that is already completed with the given value. How do we ... throw an exception. 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 - Difference between Files#delete(Path) and File#delete()

I'm using Windows-7 with java 7 update 6 and found this weird (at least to me) behavior - I have two ... operation with old and new nio API? 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 - Django staticfiles not found on Heroku (with whitenoise)

This question seems to be asked several time but I can not fix it. I deployed a django app on ... ) application = DjangoWhiteNoise(application) See Question&Answers more detail:os...

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

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Why does Java limit the size of a method to 65535 byte?

I just compiled the following code public class A { public static void main(String... args) { int i = ... does include a goto_w instruction. 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++ - Does the standard mandate an lvalue-to-rvalue conversion of the pointer variable when applying indirection?

TL;DR Given the following code: int* ptr; *ptr = 0; does *ptr require an lvalue-to-rvalue conversion of ... way to get to undefined behavior. 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 - Embed a UIViewController in a NavigationController using segues

I have a viewController that is usually (most often) accessed by using a push segue. This viewController needs to be ... ]; //setup vc } } See Question&Answers more detail:os...

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

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regex - Does w match all alphanumeric characters defined in the Unicode standard?

Does Perl's w match all alphanumeric characters defined in the Unicode standard? For example, will w match all (say) Chinese ... =~ /^w+$/); } 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 - Convert a decimal number to a fraction / rational number

In JavaScript, is there any way to convert a decimal number (such as 0.0002) to a fraction represented as a ... return the string "2/10000". See Question&Answers more detail:os...

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

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427 views

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sql server - mysql equivalent data types

I'm coming from a SQL Server background. What would the equivalent data types be for the following in MySQL: ... for very long text documents See Question&Answers more detail:os...

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

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603 views

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c - log2 not found in my math.h?

I'm using a fairly new install of Visual C++ 2008 Express. I'm trying to compile a program that uses the ... that directory... Where is log2? 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: Pandas dataframe from Series of dict

I have a Pandas dataframe: type(original) pandas.core.frame.DataFrame which includes the series object original['user'] ... which I do not need? See Question&Answers more detail:os...

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

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496 views

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r - Rstudio is duplicating commands in the command line

Having a weird problem in R that seems to have come out of nowhere... output in the RStudio terminal is ... considerably!). 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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php - How to get array key from corresponding array value?

You can easily get an array value by its key like so: $value = array[$key] but what if I have the value and I ... What's the best way to get it? 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# - Adding Days to a Date but Excluding Weekends

Given a date how can I add a number of days to it, but exclude weekends. For example, given 11/12/2008 ... be interested in any F# solution. See Question&Answers more detail:os...

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

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769 views

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internet explorer - text-overflow:ellipsis doesn't work on IE

In this page there are some links at the left sidebar that get cropped with: .widget-area .textwidget li ... :ellipsis, without any luck. See Question&Answers more detail:os...

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

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709 views

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rust - How can an operator be overloaded for different RHS types and return values?

Given the following struct: struct Vector3D { x: f32, y: f32, z: f32 } I want to overload its * ... vice versa for the other implementation. See Question&Answers more detail:os...

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

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309 views

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c++ - Classes with both template and non-template conversion operators in the condition of switch statement

The problem originally arose in this question. Consider the following code: class Var { public: operator int () ... ^ Which compiler is correct? See Question&Answers more detail: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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c# - Set BindingContext to ViewModel in XAML on Xamarin.Forms

I want to develop a simple project with Xamarin.Form and MVVM. In my solution (named XamarinPOC) i have (in ... error. Where am I wrong? See Question&Answers more detail:os...

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

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