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Scalar vs. primitive data type - are they the same thing?
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edited Jul 22 '15 at 13:48
kareman
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answered Jul 8 '...
Android微信智能心跳方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...似的长连接+心跳策略，WIFI和手机网络下的心跳间隔都为4分45秒，心跳5次后，主动断开连接再重连。
在支持GCM的设备上，主要靠GCM来激活WhatsApp，WhatsApp启动后，会建立一个与服务器的长连接，直接通过此长连接发送Push消息，...
Creating an API for mobile applications - Authentication and Authorization
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44
The way I'm thinking about doing the login part of this in my projects is:
before login the u...
How to fix: Handler “PageHandlerFactory-Integrated” has a bad module “ManagedPipelineHandler” in its
... following command at the command prompt
%windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_regiis.exe -i
If I had been on a 32 bit system, it would have looked like the following:
%windir%\Microsoft.NET\Framework\v4.0.21006\aspnet_regiis.exe -i
Remeber to run the command prompt as administr...
Manifest merger failed : uses-sdk:minSdkVersion 14
...in build.gradle:
dependencies {
compile 'com.android.support:support-v4:+'
}
Changing this to
dependencies {
// do not use dynamic updating.
compile 'com.android.support:support-v4:21.0.0'
}
fixed the issue.
Make sure you're not doing a general inclusion of com.android.support:s...
How does one reorder columns in a data frame?
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354
Your dataframe has four columns like so df[,c(1,2,3,4)].
Note the first comma means keep all the...
Sending images using Http Post
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145
I'm going to assume that you know the path and filename of the image that you want to upload. A...
Remove insignificant trailing zeros from a number?
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143
If you convert it to a string it will not display any trailing zeros, which aren't stored in th...
How does PHP 'foreach' actually work?
...on iterate($arr) {
foreach ($arr as $v) {}
}
$outerArr = [0, 1, 2, 3, 4];
iterate($outerArr);
Here, $arr will be duplicated to prevent IAP changes on $arr from leaking to $outerArr. In terms of the conditions above, the array is not a reference (is_ref=0) and is used in two places (refcount=2...
Mysql order by specific ID values
...rder by" using predefined set of column values (ID) like: order by (ID=1,5,4,3) so I would get record 1, 5, 4, 3 in that order out?
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