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algorithm - Postfix notation to expression tree

There are enough resources on how to convert an expression tree into postfix notation, and it's not that hard. But ... on how to proces 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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java - Access Spring beans from a servlet in JBoss

I want to write a simple servlet in JBoss which will call a method on a Spring bean. The purpose is to allow ... a sledgehammer to crush a nut. 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 use bluetooth to connect two iPhone?

I want to use iPhone SDK to implement a bluetooth connection between two iPhones, but I don't find any ... same time by using bluetooth? See Question&Answers more detail:os...

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

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opencv - Stroke Width Transform (SWT) implementation (Python)

Can anyone describe how can i implement SWT in python using opencv or simplecv ? 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 programmatically pair a bluetooth device on Android

For my application I'm trying to programmatically pair a bluetooth device. I'm able to show ... .BLUETOOTH_ADMIN android.permission.BLUETOOTH See Question&Answers more detail:os...

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

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652 views

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objective c - PBKDF2 using CommonCrypto on iOS

I'm trying to use CommonCrypto to generate keys using PBKDF2 but I can't seem to import CommonCrypto/ ... the other CommonCrypto headers. See Question&Answers more detail:os...

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

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ffmpeg - Superimposing two videos onto a static image?

I have two videos that I'd like to combine into a single video, in which both videos would sit on top of a ... ]:v -map 0:a OutputVideo.m4v 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 - Difference between jQuery’s .hide() and setting CSS to display: none

Which am I better off doing? .hide() is quicker than writing out .css("display", "none"), but what's ... actually doing to the HTML element? See Question&Answers more detail:os...

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

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execution - How to stop/terminate a python script from running?

I wrote a program in IDLE to tokenize text files and it starts to tokeniza 349 text files! How can I stop ... I stop a running Python program? See Question&Answers more detail:os...

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

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sql - Boolean vs tinyint(1) for boolean values in MySQL

What column type is best to use in a MySQL database for boolean values? I use boolean but my colleague uses tinyint(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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765 views

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scala - SBT stop run without exiting

How do you terminate a run in SBT without exiting? I'm trying CTRL+C but it exits SBT. Is there ... running application while keeping SBT open? See Question&Answers more detail:os...

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

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utf 8 - Adding a line break to a UITextView

I have a UITextView that takes an NSString with formatting stringWithUTF8String. It is getting its values from ... formatting. Any suggestions? See Question&Answers more detail:os...

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

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288 views

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python - Do CSRF attacks apply to API's?

I'm writing a Django RESTful API to back an iOS application, and I keep running into Django's CSRF ... API functions as CSRF-exempt? See Question&Answers more detail:os...

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

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.ssh/config file for windows (git)

I've been looking for a solution on how I can use multiple ssh keys and I figured out, that it will work ... are just for the use with github. See Question&Answers more detail:os...

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

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html - Make content horizontally scroll inside a div

I have a division in which I wanna show images and on click open them in a lightbox. I have floated them left and ... . Don't know what's 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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509 views

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svn - How to synchronize two Subversion repositories?

My company has a subsidiary with a slow Internet connection. Our developers there suffer to interact with our ... our version control system. See Question&Answers more detail:os...

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

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587 views

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regex - Regular Expression to exclude set of Keywords

I want an expression that will fail when it encounters words such as "boon.ini" and "http". The goal ... construct for any set of keywords. 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 trigger change when using the back button with history.pushstate and popstate?

I'm pretty much a novice when it comes to js so I'm sorry if I'm missing something really simple. Basically, ... in advance to anyone who does! See Question&Answers more detail:os...

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

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570 views

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mysql - Insert data into table with result from another select query

I am seeking help on the following issue: I have two tables Table_1 columns are itemid, locationid, ... locationid = Table_2.locationid ) See Question&Answers more detail:os...

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

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amazon web services - How to use MFA with AWS CLI?

How do I type in the MFA code when using the AWS CLI? I have checked the documentation page of IAM http://docs.aws. ... -01-13T23:15:43Z" } ] } See Question&Answers more detail:os...

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

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824 views

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jquery - Determine vertical direction of a touchmove

i'm trying to implement a touch listener for tablets to trigger some actions depending whether it touchmoved upwards ... the best one? 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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284 views

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python - Basic method chaining

I found this method chaining in python, but even with it I couldn't understand method chaining in Python. Here ... in advance for your 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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344 views

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android - SyncAdapter without a ContentProvider

I want to implement a SyncAdapter for a content I want to synchronize with a server. It seems that to ... ContentProvider? Thank you very much. See Question&Answers more detail:os...

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

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377 views

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python - Use binary COPY table FROM with psycopg2

I have tens of millions of rows to transfer from multidimensional array files into a PostgreSQL database. My ... SET extra_float_digits='2') See Question&Answers more detail:os...

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

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sql - How do I view grants on Redshift

I'd like to view grants on redshifts. I found this view for postgres: CREATE OR REPLACE VIEW view_all_grants AS ... check grants. (see here) See Question&Answers more detail:os...

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

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552 views

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jquery - AJAX Post of JavaScript String Array to JsonResult as List<string> Always Returns Null?

I'm trying to build up a string array in JavaScript and get the results in a string list in the action method. Below ... { test = "test" }); } See Question&Answers more detail:os...

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

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435 views

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How do I use the MinGW gdb debugger to debug a C++ program in Windows?

I have looked for documentation on this and found nothing. I have MinGW installed and it works great. I ... statements to debug complex 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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562 views

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java native interface - Use 32-bit jni libraries on 64-bit android

I've tried running an application using a native library on the Nexus 9. The application exits with an error ... and making the apk bigger)? See Question&Answers more detail:os...

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

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