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How to add a custom button state
...tion indicated by @(Ted Hopp) works, but needs a little correction: in the selector, the item states need an "app:" prefix, otherwise the inflater won't recognise the namespace correctly, and will fail silently; at least this is what happens to me.
Allow me to report here the whole solution, with s...
How to simulate a higher resolution screen? [closed]
...esolution throws this: "Your Screen Resolution is too small The pop-up you selected is too big for the screen resolution you use. Your screen resolution is 1440 pixels by 900 pixels. The pop-up window you tried to open is 1920 pixels by 1200. "
– HappyDeveloper
...
Spring @Transactional - isolation, propagation
...ion. I think if you understand the dirty reads concept you will be able to select a good option.
Example of when a dirty read can occur:
thread 1 thread 2
| |
write(x) |
| |
| read(x)
| |
rollback |
v v...
How to use a WSDL file to create a WCF service (not make a call)
...for. Try "Contract First" and WCF. or "WSDL First" and WCF.
Here is a selection:
Basic overview of WSDL-First development with WCF and SvcUtil.exe.
WSCF - A free add-in to Visual Studio enabling Contract-First design with WCF
Introduction to WSCF
A walkthrough of using WSCF
The WSCF proje...
Querying DynamoDB by date
... // More code here
}
});
Essentially your query looks like:
SELECT * FROM TABLE WHERE DataID = "some_id" AND Created > timestamp;
The secondary Index will increase the read/write capacity units required so you need to consider that. It still is a lot better than doing a scan, whi...
LEGO EV3 机器人传感器面板 · App Inventor 2 中文网
...ListPicker1.AfterPicking 时
调用 BluetoothClient1.Connect(ListPicker1.Selection)
如果 BluetoothClient1.IsConnected 那么
设置 Clock1.TimerEnabled 为 true
设置 Screen1.Title 为 "Connected"
步骤2：传感器轮询
Clock.Timer 事件每 200ms 触发...
Learning Python from Ruby; Differences and Similarities
...lues greater than 15. In Ruby, you'd have to write the following:
values.select {|v| v > 15}.map {|v| v * v}
The Ruby code doesn't feel as compact. It's also not as efficient since it first converts the values array into a shorter intermediate array containing the values greater than 15. Th...
HashSet versus Dictionary w.r.t searching time to find if an item exists
...value);
}
var testPoints = Enumerable.Repeat(1, TestReps).Select(_ => rand.Next()).ToArray();
var timer = new Stopwatch();
var total = 0;
timer.Restart();
for (int i = 0; i < TestReps; i++)
{
var newKey =...
Simple way to find if two different lists contain exactly the same elements?
...) because we are doing O(2*n) insertions into a hashmap and O(3*n) hashmap selects. I have not fully tested this code, so beware :)
//Returns true:
listsAreEquivelent(Arrays.asList("A","A","B"),Arrays.asList("B","A","A"));
listsAreEquivelent(null,null);
//Returns false:
listsAreEquivelent(Arrays.as...
PHP memory profiling
...01-29) which can be used in Qcachegrind or similar tool. Just make sure to select the memory option :)
From the docs:
Since Xdebug 2.6, the profiler also collects information about how much memory is being used, and which functions aGnd methods increased memory usage.
I'm not familiar with th...