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javascript - append option to select menu?

Using Javascript how would I append an option to a HTML select menu? e.g to this: <select> <option value= ... select> http://jsfiddle.net/SSwhr/ See Question&Answers more detail:os...

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

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Remove Null Value from String array in java

How to remove null value from String array in java? String[] firstArray = {"test1","","test2","test4",""}; I ... = {"test1","test2","test4"}; See Question&Answers more detail:os...

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

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python - OSError: Initializing from file failed on csv in Pandas

So far pandas read through all my CSV files without any problem, however now there seems to be a problem.. When ... ones. The filesize is 10MB. See Question&Answers more detail:os...

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

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stl - Why does storing references (not pointers) in containers in C++ not work?

In my program I have a STL set. set<string> myStrings; To improve the efficiency of my code I changed ... use references as container elements? 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 to unload library (DLL) from the JVM

I need to unload a DLL that was loaded with System.loadLibrary(..), anyone know if this is possible? 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 WebView onReceivedError()

Does anyone know if there is a way to intercept a "page not found" or "page not loading error" in WebView? ... and alert or toast or something } See Question&Answers more detail:os...

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

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language agnostic - What is the difference between IF-ELSE and SWITCH?

Can someone please explain this to me? See Question&Answers more detail:os...

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

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vb.net - How do I validate email address formatting with the .NET Framework?

I want a function to test that a string is formatted like an email address. What comes built-in with the .NET ... is there a more elegant way? 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# - Fastest way to remove white spaces in string

I'm trying to fetch multiple email addresses seperated by "," within string from database table, but it's ... large number of email address? See Question&Answers more detail:os...

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

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entity framework - Instantiating a context in LINQ to Entities

I've seen two different manners that programmers approach when creating an entity context in their code. The first ... goes out of scope? See Question&Answers more detail:os...

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python - Removing the timestamp from a datetime in pandas dataframe

Scenario: I have a dataframe with multiple columns retrieved from excel worksheets. Some of these columns are dates: ... index of my dataframe. See Question&Answers more detail:os...

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

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ajax - java.lang.IllegalStateException: CDATA tags may not nest

I've got a problem with an ajax request in a JSF page. When I click on the button, I get this exception: ... > </h:commandButton> </p:column> 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 Use alias in Where statement

I wounder how I could use an alias in a where statement. Example : SELECT SUBSTRING(Column1, 1, 4) + SUBSTRING ... = 'MySearch' I use MSSQL 2005 See Question&Answers more detail:os...

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

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Maximal Length of List to Shuffle with Python random.shuffle?

I have a list which I shuffle with the Python built in shuffle function (random.shuffle) However, the Python reference ... 100, 1000, 10000,... See Question&Answers more detail:os...

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

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python: restarting a loop

i have: for i in range(2,n): if(something): do something else: do something else i = 2 **restart the ... a way to restart that loop? 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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java - Why is Ant giving me a Unsupported major.minor version error

I'm running this target in Ant. <target name="compile" depends="init" description="compile the source " > <! ... . Please help me resolve 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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security - Is there a way to force apache to return 404 instead of 403?

Is there a way how I can configure the Apache web server to return a 404 (not found) error code instead ... accessed does in fact exist. See Question&Answers more detail:os...

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

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node.js - What is the difference between require('mypackage.js') and require('mypackage')?

Both these require statements appear to work the same way: var Mypackage = require('mypackage.js'); var ... there a difference between them? 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 - How to use asynctask to display a progress bar that counts down?

In my application i want the user to press a button and then wait 5 mins. i know this sounds terrible but ... the reasoning for a progress bar. 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# - WPF binding not updating the view

I have a textblock: <TextBlock HorizontalAlignment="Left" Name="StatusText" Margin="0,20" TextWrapping="Wrap" Text ... But its still not working See Question&Answers more detail:os...

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

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python - How to plot multiple pandas columns

I have dataframe total_year, which contains three columns (year, action, comedy) . total_year I want to plot the year ... =(10,5), grid=True) 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 - Add names of the states to a map in d3.js

I am using albersUSA projection to display a map. I want to add the name of the states to each state. This is what I tried ... (d)[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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memory allocation of value types and reference types in .net framework

Is there an advanced article which I can read that can explain how memory is allocated for different types (value ... and how are they managed) See Question&Answers more detail:os...

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

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string - C# hex to ascii

I'm trying to convert a String of hex to ASCII, using this: public void ConvertHex(String hexString) { StringBuilder ... What am I doing 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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javascript - How to set mousemove update speed?

im generating a function where it needs to set easy and fast a signature. I'm writing the signature in an canvas ... html(e.pageY - size); } See Question&Answers more detail:os...

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

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git - Push to GitHub error: Couldn't find host github.com in the .netrc file; using defaults

I don't know, what is going on, I got no response from github. I tried a git push for the ... delta 0) ^C localhost:send2mobile_rails phil$ 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, UTF-8, and Windows console

We try to use Java and UTF-8 on Windows. The application writes logs on the console, and we would like to ... be launched. Any hints about 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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signature - Meaning of instantiation mode indicators in arguments of Prolog predicates

Looking at Prolog documentation, predicate signatures are sometimes written as following: foo(:Bar, +Baz, -Qux, ?Mop ... are there more of them? See Question&Answers more detail:os...

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

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