Good afternoon good people,
I'm suddenly experiencing a problem with VS Code:
in a couple of Flutter apps Streamcontroller.sink.add();
suddenly require the argument "push" (before it didn't).
without adding the push argument obviously it return the error
2 required argument(s) expected, but 1 found.dart(not_enough_required_arguments)
Does anyone know what might have happened?
thank you in advance for your help
Francesco
edit: via f12 the definition actually shows the argument push
part of dart.core;
/**
* A generic destination for data.
*
* Multiple data values can be put into a sink, and when no more data is
* available, the sink should be closed.
*
* This is a generic interface that other data receivers can implement.
*/
abstract class Sink<T> {
/**
* Adds [data] to the sink.
*
* Must not be called after a call to [close].
*/
void add(T data, Future push);
/**
* Closes the sink.
*
* The [add] method must not be called after this method.
*
* Calling this method more than once is allowed, but does nothing.
*/
void close();
}
but as pskink reminded the documentation doesn't show this requirement;
I don't have idea how this can have changed,
at this point the question is:
how do I restore it to normality?
TL;DR
what appeared to be bad code,
was instead corrupted dart code;
I followed the instruction provide by Gunter
and everything went back to normal.
Thanks again Gunter
Related
I want to perform click and scroll down action on a element .
* Already i tried with Action class
* javascript executor.
* Robot class
First I am trying to click on element and hold it for a while and then scroll till expected element finds but I am getting error as method has not yet been implemented.
WebDriverException: Method has not yet been implemented (WARNING: The server did not provide any stacktrace information)
1.The above error comes when your app is not matching with the current context
2.According to your code there is a need of context change of app environment you can change context using driver.context("YOUR APP CONTEXT NAME")
3.Some times there must be error in your code like it is not locating correct element or may be you are using unwanted method
Try above 2 points it might help you
if it is not working sorry for wasting your Testing time
Happy Testing
I use I2C-tools to test firmware (HAL-based), I2C, STM32L0 MCU. When I send command to MCU (via i2cset utility), it sends an answer (received in i2cget). It works fine. If I call i2cget twice after single i2cset, it fails (which is expected behaviour). But if I execute i2cset after that error, then it also fails. So, the receive-transfer becomes broken (no callback is activated). How can it be fixed?
At the moment, HAL_I2C_Slave_Receive_IT() is called in HAL_I2C_SlaveTxCpltCallback(). HAL_I2C_SlaveRxCpltCallback() calls HAL_I2C_Slave_Transmit_IT(). Should I put HAL_I2C_Slave_Receive_IT() in two callbacks (receive/transmit related)?
I don't know if you've solved this question. However, it is more accurate to define a flag that states that the HAL_I2C_SlaveTxCpltCallback, HAL_I2C_SlaveRxCpltCallback, and HAL_I2C_ErrorCallback functions have completed transfers or an error occurred.
maybe the following codes may be useful. You can reinit after making deinit.
/**
* #brief Initialize and setup GPIO and I2C peripheral
* #param obj : pointer to i2c_t structure
* #retval none
*/
void i2c_deinit(i2c_t *obj)
{
HAL_NVIC_DisableIRQ(obj->irq);
#if !defined(STM32F0xx) && !defined(STM32L0xx)
HAL_NVIC_DisableIRQ(obj->irqER);
#endif // !defined(STM32F0xx) && !defined(STM32L0xx)
HAL_I2C_DeInit(&(obj->handle));
}
void LDC_I2C_ReInit(void)
{
HAL_I2C_Init(&hi2c1);
}
and it has a fine example in these links.
https://github.com/stm32duino/Arduino_Core_STM32/blob/c392140415b3cf29100062ecb083adfa0f59f8b1/cores/arduino/stm32/twi.h
https://github.com/stm32duino/Arduino_Core_STM32/blob/c392140415b3cf29100062ecb083adfa0f59f8b1/cores/arduino/stm32/twi.c
What is browser.ignoreSynchronization?
/**
* If true, Protractor will not attempt to synchronize with the page before
* performing actions. This can be harmful because Protractor will not wait
* until $timeouts and $http calls have been processed, which can cause
* tests to become flaky. This should be used only when necessary, such as
* when a page continuously polls an API using $timeout.
*
* #type {boolean}
*/
&
waitForAngularEnabled
Both looks same. Is there any specific thing that can achieve by one and not by other?
They are the exact same, if you look at the source code ignoreSynchronization actually calls waitForAngularEnabled. The only thing to note is, ignoreSynchronization is being deprecated and eventually will no longer be available. They are switching to waitForAngularEnabled as the main property.
As far as what they do, that has been answered here in good detail.
Question:
I'm trying to find a way to retrieve the dev object for an mdio_bus that has been added to the device tree. I'm sure I'm going to be rapidly applying my palm to my forehead when I get past this, but for the life of me, I can't find the answer anywhere. I've seen how to find objects on the bus itself using bus_find_device_by_name(), but I can't seem to find how to get the bus itself.
Background:
We are providing network access to our host using a Micrel KSZ8863 Ethernet switch attached to the MACB on an at919g20. Rather than using the fixed PHY option, I've spoofed MDIO address 0 to be a "fake" PHY representing the fixed MII link to the switch. I'm writing a driver for the switch to receive its interrupts and monitor the outward facing PHYs and control the link state of the "fake" PHY to the host. In order to configure the switch beyond basic MIIM configuration, you need to use SMI on the MDIO bus to access the full array of registers in the switch. Through further tweaking of the mii_read/write functions in the MACB, adding a header to the reg address, I believe I can use the MACB's MDIO/MII controller to do the right thing for SMI requests. Because the bus no longer gets addressed by PHY:REG, I need to be able to issue raw read/write commands straight to the bus from the switch driver. And that brings me back to my question: How do I request the dev object of the mdio_bus from the device tree by name?
Thanks,
Brian
After hunting around, fruitlessly, for a way to retrieve a device pointer to an mii_bus object, I ended up coming up with the following solution. I'm not sure its the best way to go about it, but it seems pretty clean. I basically ended up adding a helper function to mdio_bus.c that allows another driver to search for a bus by name using class_find_device(). I'm sure there is better way to do this, that doesn't involve adding onto the bus' driver, but it doesn't seem like the worst way either.
-Brian
Here are the functions I added to mdio_bus.c:
/**
* mdiobus_match_name - compares specified string to the device name
* #dev: device object to be examined
* #data: pointer to string to compare device name to
*
* Description: matching function used in call to class_find_device() to find
* a device with the specified name
*/
static int mdiobus_match_name( struct device * dev, void * data )
{
const char * name = data;
return sysfs_streq( name, dev_name( dev ) );
}
/**
* mdiobus_find_by_name - Convenience function for retrieving an mii_bus pointer
* by name
* #name: name of the bus being searched for
*/
struct mii_bus * mdiobus_find_by_name( char * name )
{
struct device * dev;
/* search devices registered for with the mdio_bus_class using the device
name as the matching criteria */
dev = class_find_device( &mdio_bus_class,
NULL,
(void *)name,
mdiobus_match_name );
/* return the mii_bus pointer or NULL if none was found */
return dev ? container_of( dev, struct mii_bus, dev ) : NULL;
}
EXPORT_SYMBOL( mdiobus_find_by_name );
has anyone figured out how to reload data in TTPhotoViewController?
I have done several attempts but never worked out a suitable solution.
Your help is much appreciated.
Vlad
TTPhotoViewController ultimately derives from TTModelViewController so you should be able to call the reload method. From TTModelViewController.h:
/**
* Reloads data from the model.
*/
- (void)reload;
/**
* Reloads data from the model if it has become out of date.
*/
- (void)reloadIfNeeded;
/**
* Refreshes the model state and loads new data if necessary.
*/
- (void)refresh;