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How to find out if an item is present in a std::vector?
All I want to do is to check whether an element exists in the vector or not, so I can deal with each case.
18 Answers
...
Git Bash doesn't see my PATH
...ecutable names without extensions. In my case, I wanted to execute a file called cup.bat. In a Windows shell, typing cup would be enough. Bash doesn't work this way, it wants the full name. Typing cup.bat solved the problem. (I wasn't able to run the file though, since apparently bash couldn't under...
Requirejs why and when to use shim config
...D, but you need to manage their dependencies. For example, in the Backbone and Underscore example above: you know that Backbone requires Underscore, so suppose you wrote your code like this:
require(['underscore', 'backbone']
, function( Underscore, Backbone ) {
// do something with Backbone
...
Extracting numbers from vectors of strings
...ion is an indirect way of getting to the solution. If you want to retrieve all the numbers, I recommend gregexpr:
matches <- regmatches(years, gregexpr("[[:digit:]]+", years))
as.numeric(unlist(matches))
If you have multiple matches in a string, this will get all of them. If you're only intere...
Is it possible to rotate a drawable in the xml description?
...ate in XML:
<?xml version="1.0" encoding="utf-8"?>
<rotate xmlns:android="http://schemas.android.com/apk/res/android"
android:fromDegrees="90"
android:toDegrees="90"
android:pivotX="50%"
android:pivotY="50%"
android:drawable="@drawable/mainmenu_back...
How to dismiss keyboard for UITextView with return key?
...urn key is pressed, the keyboard for UITextView will disappear. But actually the return key can only act as '\n'.
34 ...
How can I generate random alphanumeric strings?
...retty much linearly when generating longer strings (so long as there's actually enough memory available). Having said that, Dan Rigby's answer was almost twice as fast as this one in every test.
– LukeH
Aug 28 '09 at 0:33
...
Having issue with multiple controllers of the same name in my project
...at the 4th parameter here can be a bit confusing because of type inference and variable meaning. The 4th parameter can be a string array to constrain by namespace, an object to add IRouteConstraints OR strings that can be interpreted as constraints, or you can have 5 parameters and include both. asp...
tinygrad：不到1000行代码的深度学习框架，天才黑客开源GitHub 2.3k+ stars...
...nyBobNet()
optim = optim.SGD([model.l1, model.l2], lr=0.001)
# ... and complete like pytorch, with (x,y) data
out = model.forward(x)
loss = out.mul(y).mean()
loss.backward()
optim.step()
另外tinygrad也支持GPU：
from tinygrad.tensor import Tensor(Tensor.ones(4,4).cuda() ...
Async Image Loader Extension：异步图像加载器扩展 - App Inventor 2 拓展...
... arrangement component with circular image. This is a simple, light weight and fast async image loader since it does not uses any external library to load images.
Specifications[size=15.008px] Size: 9.36 KB
Version: 5.0
Minimum API Level: 7
Updated On: February 18, 2025 (Calcutta)...