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How to run an ad-hoc script in PostgreSQL?

I'm trying to run this in PostgreSQL 9.2: RAISE NOTICE 'hello, world!'; And the server says: Error : ERROR: ... .com/questions/18828127/how-to-run-an-ad-hoc-script-in-postgresql...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular2 routing - Angular router: how to replace param?

Let's suppose I've got 3 urls: /:projectId/info, /:projectId/users, /:projectId/users/:userId/profile ... //stackoverflow.com/questions/50784299/angular-router-how-to-replace-param...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Why is "operator void" not invoked with cast syntax?

While playing with this answer by user GMan I crafted the following snippet (compiled with Visual C++ 9): ... questions/4031228/why-is-operator-void-not-invoked-with-cast-syntax...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to get started with Big Data Analysis

(Closed). This question is opinion-based. It is not currently accepting answers. question from:https://stackoverflow.com/questions/4322559/how-to-get-started-with-big-data-analysis...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Why does toString fail to produce the correct value on an immutable BigDecimal?

import java.math.BigDecimal; import java.math.RoundingMode; public class BigDecimalTest { public static void main ( ... -to-produce-the-correct-value-on-an-immutable-bigdecimal...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Practical uses of a Dynamic type in Scala

Besides integration with dynamic languages on the JVM, what are the other powerful uses of a Dynamic type in a ... com/questions/4709183/practical-uses-of-a-dynamic-type-in-scala...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby on rails - Why would I want to use unicorn or thin instead of WEBrick for development purposes?

I've recently found that some people prefer using unicorn_rails instead of the default WEBrick as a web server for ... -use-unicorn-or-thin-instead-of-webrick-for-development-purpo...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Complex numbers in Cython

What is the correct way to work with complex numbers in Cython? I would like to write a pure C loop ... from:https://stackoverflow.com/questions/30054019/complex-numbers-in-cython...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How to merge multiple json objects into a single json object using python

(This question already has answers here): question from:https://stackoverflow.com/questions/33871755/how-to-merge-multiple-json-objects-into-a-single-json-object-using-python...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Duplicate items in legend in matplotlib?

I am trying to add the legend to my plot with this snippet: import matplotlib.pylab as plt fig = ... //stackoverflow.com/questions/19385639/duplicate-items-in-legend-in-matplotlib...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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oop - What are the key differences between OO in Smalltalk and Java?

What are the key differences between OO in Smalltalk and Java? Please note that I am a Java programmer trying to ... /what-are-the-key-differences-between-oo-in-smalltalk-and-java...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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regex - Can a URL contain a semicolon and still be valid?

I am using a regular expression to convert plain text URL to clickable links. @(https?://([-w.]+)+(:d+)? ... .com/questions/1178024/can-a-url-contain-a-semicolon-and-still-be-valid...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Slicing a numpy array along a dynamically specified axis

I would like to dynamically slice a numpy array along a specific axis. Given this: axis = 2 start = ... questions/24398708/slicing-a-numpy-array-along-a-dynamically-specified-axis...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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jQuery or JavaScript equivalent of PHP strpos function to find string on a page

Is there an equivalent function in JavaScript or jQuery similar to strpos in PHP? I want to locate a string inside ... -equivalent-of-php-strpos-function-to-find-string-on-a-page...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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swift - iOS 11 large navigation bar title unexpected velocity

I am trying to implement the iOS 11 native large navigation bar title on my new application. By calling ... questions/47649375/ios-11-large-navigation-bar-title-unexpected-velocity...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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xaml - ListView ItemTemplate 100% width

How can I make content of each ListView item expands to 100% width when using a DataTemplate? I ... https://stackoverflow.com/questions/18626696/listview-itemtemplate-100-width...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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html - Pure CSS solution for splitting items into a dynamic amount of columns

Is there a way to align items in several columns, where the number of columns depends on the widest item? Both ... css-solution-for-splitting-items-into-a-dynamic-amount-of-columns...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - How to create a delegate from a MethodInfo when method signature cannot be known beforehand?

I need a method that takes a MethodInfo instance representing a non-generic static method with arbitrary signature and ... -from-a-methodinfo-when-method-signature-cannot-be-known...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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go - nested struct initialization literals

How can I do this: type A struct { MemberA string } type B struct { A A MemberB string } ... from:https://stackoverflow.com/questions/19325496/nested-struct-initialization-literals...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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What kind of OCR Java library should I use in Android?

question from:https://stackoverflow.com/questions/1062578/what-kind-of-ocr-java-library-should-i-use-in-android...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pug - Jade templating in Meteor

In the Meteor FAQs http://meteor.com/faq/how-do-i-package-a-new-templating-system there is some ... :https://stackoverflow.com/questions/10104887/jade-templating-in-meteor...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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rvm - Should I check in `.ruby-gemset` and/or `.ruby-version`?

I've just updated RVM, and in place of the old .rvmrc, it auto-created .ruby-gemset and .ruby-version. I' ... /questions/16087120/should-i-check-in-ruby-gemset-and-or-ruby-version...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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html - Issues with touch scroll on iOS when focusing inputs

I am having some issues with a scrollable div on iOS. When trying to scroll by touching outside an input, ... /25596960/issues-with-touch-scroll-on-ios-when-focusing-inputs...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Ruby accessing outer variables in nested function

I'm sure there's a simple answer for this; I just can't seem to find it. I made a nested ... //stackoverflow.com/questions/1016408/ruby-accessing-outer-variables-in-nested-function...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angularjs - Difference between delete and remove method in $resource?

What is the difference between delete and remove methods? Both of them use DELETE method of HTTP. I ... questions/15706560/difference-between-delete-and-remove-method-in-resource...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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About multiple containers in spring framework

In a typical Spring MVC project there two "containers": One created by ContextLoaderListener and the other ... com/questions/18578143/about-multiple-containers-in-spring-framework...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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139 views

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ios - UILabel not wrapping text correctly sometimes (auto layout)

I have a uilabel setup in a view. It doesn't have a width constraint, but its width is instead ... com/questions/15513794/uilabel-not-wrapping-text-correctly-sometimes-auto-layout...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Create iOS Home Screen Shortcuts on Chrome for iOS

I have a web app that allows the user to add the web page to his home screen on the iphone. That ... com/questions/11280851/create-ios-home-screen-shortcuts-on-chrome-for-ios...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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