Hot questions

0 votes

1.3k views

1 answer

bitbucket - How to resolve git error: "Updates were rejected because the tip of your current branch is behind"

A well meaning colleague has pushed changes to the Master instead of making a branch. This means that when I ... me to merge the changes without losing either? Question&Answers:os...

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

0 votes

753 views

1 answer

python - sklearn error ValueError: Input contains NaN, infinity or a value too large for dtype('float64')

I am using sklearn and having a problem with the affinity propagation. I have built an input matrix and I keep getting ... I am using anaconda and python 2.7.9. Question&Answers:os...

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

0 votes

324 views

1 answer

java - JDBC Class.forName vs DriverManager.registerDriver

Which is the difference from forName method vs registerDriver to load and register a JDBC driver? Question&Answers:os...

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

0 votes

277 views

1 answer

python - Writing string to a file on a new line every time

I want to append a newline to my string every time I call file.write(). What's the easiest way to do this in Python? Question&Answers:os...

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

0 votes

152 views

1 answer

Android database encryption

Android uses SQLite database to store data, I need to encrypt the SQLite database, how can this be done? I ... the SQLite database that my app is using. Question&Answers:os...

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

0 votes

360 views

1 answer

JavaScript validation for empty input field

I have this input field <input name="question"/> I want to call IsEmpty function when submit clicking submit button. I ... ="Add Question" /> </body> </html> Question&Answers:os...

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

0 votes

211 views

1 answer

Initialize a long in Java

Primitive Data Types - oracle doc says the range of long in Java is -9,223,372,036,854,775,808 to 9,223, ... 2) Are all numeric literals by default of type int? Question&Answers:os...

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

0 votes

161 views

1 answer

security - Allowing Java to use an untrusted certificate for SSL/HTTPS connection

I've been working on a program to extract information from a dynamic web application, and the program worked ... any advice solving this problem will be great! Question&Answers:os...

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

0 votes

257 views

1 answer

Is there a Python equivalent of the C# null-coalescing operator?

In C# there's a null-coalescing operator (written as ??) that allows for easy (short) null checking during assignment: ... (where I don't need to repeat s)? Question&Answers:os...

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

0 votes

340 views

1 answer

r - ggplot2 two-line label with expression

I'd like to write an axis label over two lines with an expression() statement. However, plotmath and expression won ... it to sit next to the previous word. Question&Answers:os...

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

0 votes

361 views

1 answer

python - Nested classes' scope?

I'm trying to understand scope in nested classes in Python. Here is my example code: class OuterClass: outer_var = 1 ... InnerClass. Is there a way to do this? Question&Answers:os...

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

0 votes

308 views

1 answer

java - Can I watch for single file change with WatchService (not the whole directory)?

When I'm trying to register a file instead of a directory java.nio.file.NotDirectoryException is thrown. Can I ... single file change, not the whole directory? Question&Answers:os...

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

0 votes

232 views

1 answer

Targeting .NET Framework 4.5 via Visual Studio 2010

Today I installed the .NET Framework 4.5 on my machine expecting to be able to use it from Visual Studio 2010, since ... ? I'd really like to use the ribbons... Question&Answers:os...

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

0 votes

254 views

1 answer

java - Android - SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length

I have the following layout (virtually empty): <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android ... I can get this to load without the error? Question&Answers:os...

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

0 votes

137 views

1 answer

How do I return integer and numeric columns from MySQL as integers and numerics in PHP?

The problem is that a DB query should return integer data types in PHP for integer columns. Instead the query ... => false, PDO::ATTR_EMULATE_PREPARES => false, Question&Answers:os...

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

0 votes

117 views

1 answer

javascript - How do I programmatically force an onchange event on an input?

How do I programmatically force an onchange event on an input? I've tried something like this: var code = ... Neither does just updating the 'value' attribute. Question&Answers:os...

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

0 votes

493 views

1 answer

python - Alternative way to split a list into groups of n

This question already has answers here: Question&Answers:os...

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

0 votes

224 views

1 answer

iphone - CADisplayLink OpenGL rendering breaks UIScrollView behaviour

There are a few similar questions out there on SO (links at end), but none of them has allowed me to ... ES view freezes when UIScrollView is dragged on iPhone Question&Answers:os...

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

0 votes

85 views

1 answer

java - Green Threads vs Non Green Threads

I'd like to understand the advantages provided by these type of threads. In what environments are green ... core processors. Any expected behaviour problems. Question&Answers:os...

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

0 votes

234 views

1 answer

oop - HAS-A, IS-A terminology in object oriented language

I was just reading through the book and it had the terms, "HAS-A" and "IS-A" in it. Anyone know what they mean ... in the book, but the book is 600 pages long. Question&Answers:os...

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

0 votes

118 views

1 answer

Return positions of a regex match() in Javascript?

Is there a way to retrieve the (starting) character positions inside a string of the results of a regex match() in Javascript? Question&Answers:os...

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

0 votes

195 views

1 answer

python - Can modules have properties the same way that objects can?

With python properties, I can make it such that obj.y calls a function rather than just returning a value ... rather than just returning the value stored there. Question&Answers:os...

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

0 votes

153 views

1 answer

android - requestFeature() must be called before adding content

I am trying to implement a custom titlebar: Here is my Helper class: import android.app.Activity; ... requestFeature() must be called before adding content Question&Answers:os...

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

0 votes

63 views

1 answer

Code for printf function in C

This question already has answers here: Question&Answers:os...

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

0 votes

188 views

1 answer

jquery - Using 'starts with' selector on individual class names

If I have the following: <div class="apple-monkey"></div> <div class="apple-horse"></div> <div class=" ... ? Or is there a more elegant/less verbose solution? Question&Answers:os...

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

0 votes

213 views

1 answer

CMake: In which order are files parsed (cache, toolchain, etc.)?

This seems as a trivial question, since CMake is a script language the general answer is: strictly sequential. ... "command to execute" is called is undefined. Question&Answers:os...

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

0 votes

173 views

1 answer

java - How to select/get drop down option in Selenium 2

I am converting my selenium 1 code to selenium 2 and can't find any easy way to select a label ... "Value1"); browser.getSelectedValue("//path_to_drop_down"); Question&Answers:os...

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

0 votes

443 views

1 answer

python - Plotting a 2D heatmap with Matplotlib

Using Matplotlib, I want to plot a 2D heat map. My data is an n-by-n Numpy array, each with a value between 0 ... 's value in the array. How can I do this? Question&Answers:os...

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

Categories

Just Browsing Browsing

Most popular tags