Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Login
Remember
Register
Ask
Q&A
All Activity
Hot!
Unanswered
Tags
Users
Ask a Question
Ask a Question
Categories
All categories
Topic[话题] (13)
Life[生活] (4)
Technique[技术] (2.1m)
Idea[创意] (3)
Jobs[工作] (2)
Others[杂七杂八] (18)
Code Example[编程示例] (0)
Hot questions
0
votes
269
views
1
answer
http - How to use Python to login to a webpage and retrieve cookies for later usage?
I want to download and parse webpage using python, but to access it I need a couple of cookies set. Therefore ... possible I only want to use builtin modules. Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
http
0
votes
258
views
1
answer
python - DRF: Simple foreign key assignment with nested serializers?
With Django REST Framework, a standard ModelSerializer will allow ForeignKey model relationships to be assigned or changed ... not class Meta: model = Parent Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
421
views
1
answer
c - Avoid trailing zeroes in printf()
I keep stumbling on the format specifiers for the printf() family of functions. What I want is to be able to ... desired 359.013 359.01 Can anybody help me? Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c
0
votes
413
views
1
answer
python - Encrypt & Decrypt using PyCrypto AES 256
I'm trying to build two functions using PyCrypto that accept two parameters: the message and the key, and then ... the code part since it was not secure. Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
323
views
1
answer
audio - Playing an arbitrary tone with Android
Is there any way to make Android emit a sound of arbitrary frequency (meaning, I don't want to have pre- ... of outputting the standard DTMF tones. Any ideas? Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
audio
0
votes
245
views
1
answer
bash - Shell script read missing last line
I have an ... odd issue with a bash shell script that I was hoping to get some insight on. My team ... especially the first one, would be very much appreciated. Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
bash
0
votes
455
views
1
answer
multithreading - Difference between -pthread and -lpthread while compiling
What is the difference between gcc -pthread and gcc -lpthread which is used while compiling multithreaded programs? Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
multithreading
0
votes
528
views
1
answer
githooks - Can Git hook scripts be managed along with the repository?
We'd like to make a few basic hook scripts that we can all share -- for things like pre-formatting ... scripts point to version controlled scripts in my repo? Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
githooks
0
votes
737
views
1
answer
javafx 8 - Java: How do I start a standalone application from the current one when both are in the same package?
This seems like it should be easy, so I must be missing something obvious: I have 4 standalone applications ... all 4 of them being standalone applications? Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
javafx
0
votes
124
views
1
answer
security - Why Does OAuth v2 Have Both Access and Refresh Tokens?
Section 4.2 of the draft OAuth 2.0 protocol indicates that an authorization server can return both an ... the refresh_token and not have a refresh_token? Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
security
0
votes
97
views
1
answer
Is there a performance difference between i++ and ++i in C?
Is there a performance difference between i++ and ++i if the resulting value is not used? Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
Is
0
votes
284
views
1
answer
jQuery and AJAX response header
So I've got this jQuery AJAX call, and the response comes from the server in the form of a 302 redirect. ... with the parsing of the header would be fantastic. Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
jQuery
0
votes
208
views
1
answer
How can I populate a text field using PrimeFaces AJAX after validation errors occur?
I have a form in a view which performs ajax partial processing for autocompletion and gmap localization. My backing ... to debug JSF life cycle? Any ideas? Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
How
0
votes
205
views
1
answer
java - How to count the number of occurrences of an element in a List
I have an ArrayList, a Collection class of Java, as follows: ArrayList<String> animals = new ArrayList<String>(); animals. ... in JDK 1.6, so I cannot use it. Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
81
views
1
answer
python - Append multiple pandas data frames at once
I am trying to find some way of appending multiple pandas data frames at once rather than appending them one by one using df ... of df = rbind(t1,t2,t3,t4,t5) Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
508
views
1
answer
http - What's the difference between Cache-Control: max-age=0 and no-cache?
The header Cache-Control: max-age=0 implies that the content is considered stale (and must be re-fetched) ... the same thing as Cache-Control: no-cache. Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
http
0
votes
1.1k
views
1
answer
cmd - Displaying Windows command prompt output and redirecting it to a file
How can I run a command-line application in the Windows command prompt and have the output both displayed and ... , similar to the tee command on Unix? Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
cmd
0
votes
128
views
1
answer
c++ - How can I pass a member function where a free function is expected?
The question is the following: consider this piece of code: #include <iostream> class aClass { public: void aTest(int ... like to access a member of the class. Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
c++
0
votes
344
views
1
answer
java - How should I use try-with-resources with JDBC?
I have a method for getting users from a database with JDBC: public List<User> getUser(int userId) { String sql = ... ) { e.printStackTrace(); } return users; } Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
java
0
votes
98
views
1
answer
How do I search sub-folders and sub-sub-folders in Google Drive?
This is a commonly asked question. The scenario is:- folderA____ folderA1____folderA1a \____folderA2____folderA2a \ ... folders under the root folderA. Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
How
0
votes
215
views
1
answer
android - How can I add the new "Floating Action Button" between two widgets/layouts
I guess you have seen the new Android design guidelines, with the new "Floating Action Button" a.k.a "FAB" For ... am convinced there is a proper way to do it. Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
android
0
votes
96
views
1
answer
How to get the file name from a full path using JavaScript?
Is there a way that I can get the last value (based on the '' symbol) from a full path? Example: C: ... get recycled log.jpg from the full path in JavaScript. Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
How
0
votes
265
views
1
answer
What's the difference between window.location and document.location in JavaScript?
Should both of them reference the same object? Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
What's
0
votes
132
views
1
answer
Cluster analysis in R: determine the optimal number of clusters
Being a newbie in R, I'm not very sure how to choose the best number of clusters to do a k-means analysis. After plotting a ... (n) d <- data.frame( x, y, z ) Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
Cluster
0
votes
119
views
1
answer
Java optional parameters
How do I use optional parameters in Java? What specification supports optional parameters? Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
Java
0
votes
101
views
1
answer
ios - Remove HTML Tags from an NSString on the iPhone
There are a couple of different ways to remove HTML tags from an NSString in Cocoa. One way is to render the string into an ... CDATA [ >>>>>>>>>>>> ]]> Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
ios
0
votes
47
views
1
answer
How to switch to new window in Selenium for Python?
I am working on selenium automation project using Python. I am facing an issue, which is handling multiple ... some code examples to perform this action? Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
How
0
votes
220
views
1
answer
.net - Choosing between MEF and MAF (System.AddIn)
The Managed Extensibility Framework (MEF) and Managed AddIn Framework (MAF, aka System.AddIn) seem to accomplish ... would you choose to use both together? Question&Answers:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
.net
Page:
« prev
1
...
318
319
320
321
322
323
324
325
326
327
328
...
715
next »
Ask a question:
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question
Just Browsing Browsing
[1] java - Error on creating data-source and and hibernate transaction manager beans
[2] jmeter - Performance Test - Distributed mode with jtl and smtp listener
[3] 请问element-ui支持Vue3.0吗
[4] js日期操作问题--给定时间区间生成区间内详细数组
[5] php socket编程问题
[6] tensorflow - TensorflowJS predicts unknown weight and constant
[7] regex - python regular expression not matching file contents with re.match and re.MULTILINE flag
[8] encryption - Encrypt/Decrypt String using Public/Private Key in Java and Javascript
[9] vba - Clear Formatting for a Range, not the Selection
[10] node.js - Dialogflow/Google Actions fulfillment (using Google App Engine & Storage) returning error 4: DEADLINE EXCEEDED, despite being simple
2.1m
questions
2.1m
answers
60
comments
57.0k
users
Most popular tags
javascript
python
c#
java
How
android
c++
php
ios
html
sql
r
c
node.js
.net
iphone
asp.net
css
reactjs
jquery
ruby
What
Android
objective
mysql
linux
Is
git
Python
windows
Why
regex
angular
swift
amazon
excel
algorithm
macos
Java
visual
how
bash
Can
multithreading
PHP
Using
scala
angularjs
typescript
apache
spring
performance
postgresql
database
flutter
json
rust
arrays
C#
dart
vba
django
wpf
xml
vue.js
In
go
Get
google
jQuery
xcode
jsf
http
Google
mongodb
string
shell
oop
powershell
SQL
C++
security
assembly
docker
Javascript
Android:
Does
haskell
Convert
azure
debugging
delphi
vb.net
Spring
datetime
pandas
oracle
math
Django
联盟问答网站-Union QA website
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
DevDocs API Documentations
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
在这了问答社区
DevDocs API Documentations
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
DevDocs API Documentations
广告位招租
...