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javascript - Converting an image to base64 in angular 2

Converting an image to base64 in angular 2, image is uploaded from local . Current am using fileLoadedEvent. ... readAsDataURL(fileToLoad); } } See Question&Answers more detail:os...

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

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linux - What does the '-' (dash) after variable names do here?

if [ -n "${BASH-}" -o -n "${ZSH_VERSION-}" ] ; then hash -r 2>/dev/null fi Where can I find the reference on this? 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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How do I run a command-line program in Delphi?

I need to execute a Windows "find" command from a Delphi software. I've tried to use the ShellExecute command, ... not as argument for cmd.exe. See Question&Answers more detail:os...

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

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android repeat action on pressing and holding a button

I want to implement repeat action on pressing and holding a button. Example: When user click on a button and ... his finger from the button. 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 - Android: Changing Background-Color of the Activity (Main View)

I want to change the background color of my Main-View (not a Button or a Text-View) just the real ... changes the background of the Button. 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 - Use Object.assign or Spread Operator in React/Redux? Which is a better practise

I have some confusion about using Object.assign for React and Redux. I read this article. It says ES6 Does ... alternative for the above code? 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# - Updating PartialView mvc 4

Ey! How I could refresh a Partial View with data out of the Model? First time, when the page loads it's ... > @Html.Hidden("newpoints", Model) 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 do I do a left outer join with Dynamic Linq?

I am trying to mimick the left outer join here but using dynamic linq extension methods. What i ... the DefaultIfEmpty within the SelectMany 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 do I validate incoming JSON data inside a REST service?

A rest service needs to validate all incoming json data against a json schema. The json schemas are public ... I do such a validation? See Question&Answers more detail:os...

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

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What is the best method to reduce the size of my Javascript and CSS files?

When working with large and/or many Javascript and CSS files, what's the best way to reduce the file sizes? 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++ - Compile-time or runtime detection within a constexpr function

I was excited when constexpr was introduced in C++11, but I unfortunately made optimistic assumptions about ... would be compromised. See Question&Answers more detail:os...

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

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.net - How do I launch an application after install in a Visual Studio Setup Project

I have created a setup project using Visual Studio 2008. After the application is finished installing, I would like to ... how this can be done? See Question&Answers more detail:os...

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

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Obtain MAC Address from Devices using Python

I'm looking for a way (with python) to obtain the layer II address from a device on my local network. ... they have, email alerts to myself. 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++ & Boost: encode/decode UTF-8

I'm trying to do a very simple task: take a unicode-aware wstring and convert it to a string, encoded ... would greatly be appreciated! 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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x509certificate - How to get server certificate chain then verify it's valid and trusted in Java

I need to create an Https connection with a remote server then retrieve and verify the certificate. I have ... really appreciate any help! 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 - Set Alpha/Opacity of Layout

Is it possible to set and get the Alpha/Opacity of a Layout and all it's child views? I'm not talking about ... was a direct method I could use. 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 - JAXB unmarshall with namespaces and prefix

I am using JAXB to parse xml elements from the SOAP response. I have defined POJO classes for the xml elements. ... .one.two; 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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why is data structure alignment important for performance?

Can someone give me a short and plausible explanation for why the compiler adds padding to data structures in ... byte aligned in Windows? 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 print time difference in accuracy of milliseconds and nanoseconds from C in Linux?

I have this program which prints the time difference between 2 different instances, but it prints in accuracy of ... How can I accomplish that? 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 do convert unicode escape sequences to unicode characters in a python string

When I tried to get the content of a tag using "unicode(head.contents[3])" i get the output similar to this: ... . How to do it in python? See Question&Answers more detail:os...

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

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excel - Cannot run the macro... the macro may not be available in this workbook

I am trying to call a sub on a different worksheet but I got a run time error message. Specifically, I ... .PreparetheTables" but did not work. See Question&Answers more detail:os...

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

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android - Can GradientColor be used to define a gradient for a fill or stroke entirely in XML?

I was looking at the documentation for GradientColor https://developer.android.com/reference/android/R.styleable. ... item> </color> See Question&Answers more detail:os...

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

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wpf - Progress bar with dynamic text & text color update

I've a progressbar whose text changes dynamically. I want to update the appearance of it such that as ... white background should remain black. 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 convert a string length to a pixel unit?

I have a string like this: string s = "This is my string"; I am creating a Telerik report and I ... that inherits from Telerik.Reporting.Report. 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# - Find if point lies on line segment

I have line segment defined by these two points: A(x1,y1,z1) and B(x2,y2,z2). I have point p(x,y,z). ... if the point lies on the line segment? See Question&Answers more detail:os...

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

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Windows 7 Taskbar Progress Bar in Java

I'd like to know if it is possible to make a progress bar displayed on the taskbar like Windows Explorer does when ... C#. SWT won't cut 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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268 views

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Kitkat kills: Not allowed to load local resource: file:///android_asset/webkit/android-weberror.png

I have an app that uses WebViews. I've changed my targetAPI from 18 to 19 and I'm currently testing on the ... more, I'll update the question. 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 do I change the default Type for Numeric deserialization?

I'm deserializing some properties to a Dictionary<string, object>. When I deserialize some json, it populates ... DateTimes instead of Strings. See Question&Answers more detail:os...

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

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