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postgresql return 0 if returned value is null
...
For those wondering, NULLIF(v1, v2) does pretty much the opposite of COALESCE in that it returns NULL if v1 equals v2.
– s.m.
Jun 8 '16 at 6:30
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git shallow clone (clone --depth) misses remote branches
...also add specific tags to be fetched, using config like fetch = +refs/tags/v2.0.0:refs/tags/v2.0.0.
– Sam Watkins
Jan 29 '15 at 13:32
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App Inventor 2 SQLite 拓展：超流行兼容主流SQL语法的迷你本地数据库引擎 ...
... 教育 入门必读 中文教程 IoT专题 AI2拓展 ChatGPT接入 Aia Store 开通VIP 搜索 App Inventor 2 SQLite 拓展：超流行兼...
Google Maps V3 - How to calculate the zoom level for a given bounds
...nds using the Google Maps V3 API, similar to getBoundsZoomLevel() in the V2 API.
11 Answers
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对外网用户的squid代理+认证 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... install
3、下载并安装squid
从http://www.squid-cache.org/Versions/v2/2.6/下载squid-2.6.STABLE16.tar.gz
并通过FTP放置服务器目录中/home/funpower，然后开始解压安装：
jiulongproxynew# cd /home/funpower
jiulongproxynew# tar zxvf squid-2.6.STABLE16.tar.gz
jiulongproxy...
The quest for the Excel custom function tooltip
... Description = "is the second number that will be added")]
double v2)
{
return v1 + v2;
}
we get both the function description
and when selecting the function, we get argument help
That looks nice, but it's all still very flaky, only works on my machine and sometimes crashes Exc...
[SOLVED] Can't send payload > 23bytes(MTU setted to 128bytes) - #9 by ...
...docs, you have done this completely backwards.
Just ask for the 192 MTU in AI2, and start transmitting after you got the event that tells you both sides can handle the 192 size.
1 Like
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Hidden features of mod_rewrite
...d subsequent passes). However, the [END] flag is only available for Apache v2.3.9+, so if you have v2.2 or lower, you're stuck with just the [L] flag.
For earlier versions, you must rely on RewriteCond statements to prevent matching of rules on subsequent passes of the URL parsing engine.
# Only...
How to implement an STL-style iterator and avoid common pitfalls?
.../ It's prefer to use the following way:
std::vector<uint8_t> v2(data, data + size);
}
{
std::list<std::vector<uint8_t>> queue_;
queue_.emplace_back(begin(data), end(data, size));
queue_.emplace_back(data, data + size);
}
}
...
Mark error in form using Bootstrap
...lp-block">Woohoo!</span>
</div>
</form>
Bootstrap v2
See the live version on jsfiddle
The .error, .success, .warning and .info classes are appended to the .control-group. This is standard Bootstrap markup and styling in v2. Just follow that and you're in good shape. Of c...