![]() ComputeResult() and ProvideResult() would run on the same thread which isn't safe. Using Then() to join compute_result_cb and provide_result_cb directly would be inappropriate. void ProvideResult ( int result ) īase :: OnceCallback provide_result_cb = int ComputeResult () īase :: OnceCallback compute_result_cb = base :: BindOnce (& ComputeResult ) // Task runner for the current thread.īase :: SequencedTaskRunner :: GetCurrentDefault () // A function to accept the result, except it can only be run safely from the // current thread. A function to compute some interesting result, except it can only be run // safely from `other_task_runner` and not the current thread. Chaining callbacks across different task runners // The task runner for a different thread. ![]() Field values are always displayed before tag values. will display four extra columns in the mpileup output, the first being a list of comma-separated read names, followed by a list of flag values, a list of RG tag values and a list of NM tag values. If this would be helpful for you, please let know or ping the CL. samtools mpileup -output-extra FLAG,QNAME,RG,NM in.bam. If you want the return value from |first| to be preserved and ultimately returned after running both |first| and |second|, then you would need a primitive such as the base::PassThrough() helper in the base::PassThrough CL. Note that the return value from |first| will be lost in the above example, and would be destroyed before |second| is run. ![]() Run () // This will effectively create a callback that when Run() will call // `first() second() ` instead of `second(first()) `. first.Then(second).Run() // We can drop the result from |first| before running second.īase :: BindRepeating ( base :: IgnoreResult ( first )). The templated base::) // This will not compile, because |second| can not receive the return value from // |first|. ![]() Passing Parameters Owned By The Callback.Quick reference for binding parameters to BindOnce() and BindRepeating().Binding A Class Method And Having The Callback Own The Class.Binding A Class Method With Manual Lifetime Management.Binding A Class Method With Weak Pointers.Avoiding Copies With Callback Parameters.Chaining callbacks across different task runners. ![]()
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