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WCF：使用Array替代List - 更多技术 - 清泛网 - 专注C++内核技术
...在于SOAP消息如何生成：
对于List<byte>：
...
<s:Body u:Id="_0"
xmlns:u="http://docs.oasis-open.org/wss/2004/01/
oasis-200401-wss-wssecurity-utility-1.0.xsd">
<SendData xmlns="http://tempuri.org/">
<array
xmlns:a="http://schemas.microsoft.com/2003/10/Serialization/...
WCF：使用Array替代List - 更多技术 - 清泛网 - 专注C/C++及内核技术
...在于SOAP消息如何生成：
对于List<byte>：
...
<s:Body u:Id="_0"
xmlns:u="http://docs.oasis-open.org/wss/2004/01/
oasis-200401-wss-wssecurity-utility-1.0.xsd">
<SendData xmlns="http://tempuri.org/">
<array
xmlns:a="http://schemas.microsoft.com/2003/10/Serialization/...
WCF：使用Array替代List - 更多技术 - 清泛网移动版 - 专注C/C++及内核技术
...在于SOAP消息如何生成：
对于List<byte>：
...
<s:Body u:Id="_0"
xmlns:u="http://docs.oasis-open.org/wss/2004/01/
oasis-200401-wss-wssecurity-utility-1.0.xsd">
<SendData xmlns="http://tempuri.org/">
<array
xmlns:a="http://schemas.microsoft.com/2003/10/Serialization/...
WCF：使用Array替代List - 更多技术 - 清泛网 - 专注C/C++及内核技术
...在于SOAP消息如何生成：
对于List<byte>：
...
<s:Body u:Id="_0"
xmlns:u="http://docs.oasis-open.org/wss/2004/01/
oasis-200401-wss-wssecurity-utility-1.0.xsd">
<SendData xmlns="http://tempuri.org/">
<array
xmlns:a="http://schemas.microsoft.com/2003/10/Serialization/...
Getting time elapsed in Objective-C
...er to use Apple's function CACurrentMediaTime!
I also benchmarked the mach_timebase_info call and it takes approximately 19ns on my iPhone 6, so I removed the (not threadsafe) code which was caching the output of that call.
#include <mach/mach.h>
#include <mach/mach_time.h>
uint64_t g...
Android Studio - How to increase Allocated Heap Size
...
I looked at my Environment Variables and had a System Variable called _JAVA_OPTIONS with the value -Xms256m -Xmx512m, after changing this to -Xms256m -Xmx1024m the max heap size increased accordingly.
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...
Using Pylint with Django
...unning pylint add the following flag to the command:
--load-plugins pylint_django
Detailed blog post here.
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Create unique constraint with null columns
...
Create two partial indexes:
CREATE UNIQUE INDEX favo_3col_uni_idx ON favorites (user_id, menu_id, recipe_id)
WHERE menu_id IS NOT NULL;
CREATE UNIQUE INDEX favo_2col_uni_idx ON favorites (user_id, recipe_id)
WHERE menu_id IS NULL;
This way, there can only be one combination...
Pandas aggregate count distinct
...
How about either of:
>>> df
date duration user_id
0 2013-04-01 30 0001
1 2013-04-01 15 0001
2 2013-04-01 20 0002
3 2013-04-02 15 0002
4 2013-04-02 30 0002
>>> df.groupby("date").agg({"duration": np.sum, "use...
Replace all non-alphanumeric characters in a string
...
Use \W which is equivalent to [^a-zA-Z0-9_]. Check the documentation, https://docs.python.org/2/library/re.html
Import re
s = 'h^&ell`.,|o w]{+orld'
replaced_string = re.sub(r'\W+', '*', s)
output: 'h*ell*o*w*orld'
update: This solution will exclude undersco...