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angular - Behaviour subject initial value null?

private customer: Subject<Object> = new BehaviorSubject<Object>(null); setCustomer(id, accountClassCode) { this.customer. ... that is not null? 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# - Is there a way to get all the querystring name/value pairs into a collection?

Is there a way to get all the querystring name/value pairs into a collection? I'm looking for a built in way ... the & and load a collection. See Question&Answers more detail:os...

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

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join - Joining a List<String> in Java with commas and "and"

Given a list List<String> l = new ArrayList<String>(); l.add("one"); l.add("two"); l.add("three"); ... , ").replaceAll(lastCommaRegex, ", and"); See Question&Answers more detail:os...

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

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r - What does the function invisible() do?

R help explains invisible() as "a function that returns a temporarily invisible copy of an object". I have ... very much 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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.net - What does the @ prefix do on string literals in C#

I read some C# article to combine a path using Path.Combine(part1,part2). It uses the following: string part1 = @" ... of @ in part1 and part2? See Question&Answers more detail:os...

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

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mysql extract year from date format

I need a mysql query to extract the year from the following date format from a table in my database. For eg : ... there any way to solve 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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python - Upgrade version of Pandas

I am running Python on a Windows machine at the following path: C:WinPython-64bit-3.4.4.1 I am trying to ... , operable program or batch file'. See Question&Answers more detail:os...

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

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urlencode - urlencoding in Dart

Is there a function to do urlencoding in Dart? I am doing a AJAX call using XMLHttpRequest object and I need the ... didn't turn up any results. 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: Replace with regex

I need to replace part of a string. I was looking through the Python documentation and found re.sub. import re s ... tell me what I did 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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python - Eclipse and Google App Engine: ImportError: No module named _sysconfigdata_nd; unrecognized arguments: --high_replication

Just upgraded to Ubuntu 13.04 and Eclipse complained with the following 2 errors: 1. ImportError: No module named ... work? Thanks in advance. 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 - Does --disable-web-security Work In Chrome Anymore?

I'm trying to do a simple test without changing any server-side code involving a cross-domain AJAX call, and ... has this feature been dropped? See Question&Answers more detail:os...

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

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Rails: How to parse date-time string into a specific time zone

I'm using Rails 3.2 and ruby 1.9.3 on Debian. I have an app that collects a date, time, and timezone in ... HTML forms. Thank you for any 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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Python for loop and iterator behavior

I wanted to understand a bit more about iterators, so please correct me if I'm wrong. An iterator is an object ... the hood of the for loop? See Question&Answers more detail:os...

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

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make *** no targets specified and no makefile found. stop

I have a problem installing package dionaea. After I type this: ./configure --with-lcfg-include=/opt/dionaea/ ... directory is /usr/local/src See Question&Answers more detail:os...

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

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Internet Explorer 11 won't set cookies on a site

For some reason IE11 (only IE11, tested with other IE9 and IE10) won't create a session on a site i've ... what could be the problem? 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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junit - How to compare two Streams in Java 8

What would be a good way to compare two Stream instances in Java 8 and find out whether they have the same ... way to compare two streams. See Question&Answers more detail:os...

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

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280 views

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How to iterate through XML in Powershell?

I have this XML document in a text file: <?xml version="1.0"?> <Objects> <Object Type="System. ... outputted with SQL Server (MSSQLSERVER) 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 - Bold font weight for LaTeX axes label in matplotlib

In matplotlib you can make the text of an axis label bold by plt.xlabel('foo',fontweight='bold') You can also ... bold $phi$ in my axis label? See Question&Answers more detail:os...

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

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css - How do I select an element only when inside another element?

I have a question regarding CSS selectors. How do I select a <div> with a specific class name only when its inside a <ul ... ></li> </ul> </div> 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 add days into the date in android

In my database I am getting start date like 2011-11-30(yyyy/mm/dd)format.and duration date like 40 days.How ... /yyyy. Can anyone help me 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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aggregation framework - How to flatten a subdocument into root level in MongoDB?

For example, if I have a document like this { a: 1, subdoc: { b: 2, c: 3 } } How can I convert it into a format like ... ) { a: 1, b: 2, c: 3 } See Question&Answers more detail:os...

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

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850 views

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google chrome - Cannot set cookies in Javascript

I have a very simple line of code that set and read a cookie. I kept getting empty value for my cookie and have ... </script> </BODY> </HTML> 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 to do a case sensitive GROUP BY?

If I execute the code below: with temp as ( select 'Test' as name UNION ALL select 'TEST' UNION ALL select 'test ... 1 TEST 1 test 1 tester 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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834 views

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batch file - ERRORLEVEL inside IF

Just stumbled into a weird thing with %ERRORLEVEL% and wanted to see if anyone knows why and if there's a ... //support.microsoft.com/kb/69576 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 restore a builtin that I overwrote by accident?

I accidentally overwrote set by using it as a variable name in an interactive python session - is there any way ... course I can if necessary.) See Question&Answers more detail:os...

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

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358 views

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How to output HTML from JSP <%! ... %> block?

I just started learning JSP technology, and came across a wall. How do you output HTML from a method in <% ... -optimal, it's still interesting. See Question&Answers more detail:os...

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

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504 views

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Only show number buttons on Soft Keyboard in Android?

On the soft keyboard in Android you can set the soft keyboard to show the numbers instead of a-z keyboard using ... ...? Thanx for listening! See Question&Answers more detail:os...

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

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972 views

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debugging - How to make visual studio break only on unhandled exceptions?

On my other machines, Visual Studio always broke on errors when there was not a try/catch to handle them, but if ... work like I'm used to? See Question&Answers more detail:os...

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

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