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std::shared_ptr thread safety explained
I'm reading http://gcc.gnu.org/onlinedocs/libstdc++/manual/shared_ptr.html and some thread safety issues are still not clear for me:
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Exit a Script On Error
...ing for exit?
This is the best bash guide around.
http://tldp.org/LDP/abs/html/
In context:
if jarsigner -verbose -keystore $keyst -keystore $pass $jar_file $kalias
then
echo $jar_file signed sucessfully
else
echo ERROR: Failed to sign $jar_file. Please recheck the variables 1>&2
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Django - what is the difference between render(), render_to_response() and direct_to_template()?
...g different. It's a generic view that uses a data dictionary to render the html without the need of the views.py, you use it in urls.py. Docs here
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从源代码剖析Mahout推荐引擎 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...介绍，摘自：http://www.cnblogs.com/dlts26/archive/2012/06/20/2555772.html
5. 近邻算法工具集
近邻算法只对于UserCF适用，通过近邻算法给相似的用户进行排序，选出前N个最相似的，作为最终推荐的参考的用户。
近邻算法分为2种：
Neares...
How to access a preexisting collection with Mongoose?
...uring out this issue, the document is found here mongoosejs.com/docs/guide.html#collection
– ElvinD
Sep 16 '15 at 6:50
3
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Merge a Branch into Trunk
...e answer of topek, and http://subversion.apache.org/docs/release-notes/1.8.html#auto-reintegrate
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How to use ScrollView in Android?
...r. Quoted from : developer.android.com/reference/android/widget/ScrollView.html
– metis
Apr 5 '17 at 19:12
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Convert PDF to clean SVG? [closed]
...PHP. I could do it directly with PDF, but PDF can't be inlined easily into HTML, but SVG can. I may just stick with PDF and convert it to JPG in PHP after editing it's values..
– DanRedux
Apr 23 '12 at 21:35
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How does a Java HashMap handle different objects with the same hash code?
...ion at http://javarevisited.blogspot.com/2011/02/how-hashmap-works-in-java.html
To Summarize:
HashMap works on the principle of hashing
put(key, value): HashMap stores both key and value object as Map.Entry. Hashmap applies hashcode(key) to get the bucket. if there is collision ,HashMap uses Lin...
Catch a thread's exception in the caller thread in Python
...tures.as_completed
https://docs.python.org/3.7/library/concurrent.futures.html#concurrent.futures.as_completed
The following solution:
returns to the main thread immediately when an exception is called
requires no extra user defined classes because it does not need:
an explicit Queue
to add an...