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What is Data Transfer Object?
...s prohibited because of circular/cyclic dependency.
User Service ----> XX CANNOT CALL XX ----> Order Service
Some ORM Frameworks have the ability of projection via using additional interfaces or classes. So repositories can return View objects directly. There for you do not need an addition...
Returning redirect as response to XHR request
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In the case of a redirect to a 401 (or any 4xx or 5xx error) I'd assume your program would behave as if the request led directly to a 401. Is that not what you're seeing?
– greim
Jan 15 '14 at 22:16
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Renaming columns in pandas
...can do something like: new_columns = df.columns.values; new_columns[0] = 'XX'; df.columns = new_columns
– cd98
Nov 20 '13 at 14:18
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How to Correctly Use Lists in R?
...n away, but not very far, and not very fast")
x <- strsplit(stuff, ",")
xx <- unlist(strsplit(stuff, ","))
In the first case (x : which returns a list), you can tell what the 2nd "part" of the 3rd string was, eg: x[[3]][2]. How could you do the same using xx now that the results have been "u...
Android ViewPager - Show preview of page on left and right
...just use below code:
android:clipToPadding="false"
android:paddingLeft="XX"
android:paddingRight="XX"
For example:
<androidx.viewpager.widget.ViewPager
android:id="@+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
a...
传感器组件 · App Inventor 2 中文网
...件仅适用于应用程序的 Screen1 主屏幕！！
属性
最新消息
返回最近接收到的标签的内容。
启用读值模式
指定 NFC 硬件是否在读取模式下运行。读取模式 (真) 或 写入模式（假）。
写入文本
指定在写入模式下将要写入...
How to update Python?
... in the 2.7 root folder it will not delete them ;)
– XXN
Jan 24 '19 at 16:12
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show 4 more comments
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How do you connect to multiple MySQL databases on a single webpage?
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Warning : mysql_xx functions are deprecated since php 5.5 and removed since php 7.0 (see http://php.net/manual/intro.mysql.php), use mysqli_xx functions or see the answer below from @Troelskn
You can make multiple calls to mysql_connect()...
Virtual Memory Usage from Java under Linux, too much memory used
...M's memory footprint. This might reduce the virtual memory footprint:
-XX:ReservedCodeCacheSize=32m Reserved code cache size (in bytes) - maximum
code cache size. [Solaris 64-bit,
amd64, and -server x86: 48m; in
1.5.0_06 and earlier, Solaris 64-bit and and64: 1024m.]
-XX:MaxPermSize=6...
Cassandra port usage - how are the ports used?
...or current versions of Cassandra:
7199 - JMX (was 8080 pre Cassandra 0.8.xx)
7000 - Internode communication (not used if TLS enabled)
7001 - TLS Internode communication (used if TLS enabled)
9160 - Thrift client API
9042 - CQL native transport port
...