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App Inventor 2 UrsPahoMqttClient 拓展 - 物联网轻量级MQTT协议 · App Inventor 2 中文网
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App Inventor 2 UrsPahoMqttClient 拓展 - ...
What's the difference between ASCII and Unicode?
... That doesn't fit in 16 bits anymore.
Encoding in 16-bits was common when v2 came around, used by Microsoft and Apple operating systems for example. And language runtimes like Java. The v2 spec came up with a way to map those 1.1 million code points into 16-bits. An encoding called UTF-16, a var...
'git add --patch' to include new files?
...es --raw: show correct post-image of intent-to-add files", 2020-07-01, Git v2.28.0-rc0 -- merge listed in batch #7) this has stopped working as intent-to-add paths are now show as new files rather than changes to an empty blob and git apply(man) refused to apply a creation patch for a path that was ...
What is the difference between “px”, “dip”, “dp” and “sp”?
...illimeters - based on the physical size of the screen.
pt
Points - 1/72 of an inch based on the physical size of the screen.
dp or dip
Density-independent Pixels - an abstract unit that is based on the physical density of the screen. These units are relative to a 160
dpi screen, so...
How do I view all commits for a specific day?
...rking on a specific day and update my timesheet based on that, but it's a pain in the ass to type in the full date in ISO format so I just do it like this
git log --after=jun9 --before=jun10
and I add --author to only print my commits
git log --since=jun9 --until=jun10 --author=Robert
This pr...
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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HintPath vs ReferencePath in Visual Studio
... of the file Microsoft.Common.targets:
C:\Windows\Microsoft.NET\Framework\v2.0.50727\Microsoft.Common.targets
C:\Windows\Microsoft.NET\Framework\v3.5\Microsoft.Common.targets
C:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Common.targets
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\Micr...
C# vs C - Big performance difference
...mance.
Once you perform the correct optimizations in the compiler, I get .72 seconds for the C++ application and 1.16 seconds for the C# application (both in release build). Since the C# application is very basic and allocates the memory used in the loop on the stack and not on the heap, it is actu...
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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