append

AVAssetWriter error: Cannot append media data after ending session

由 大憨熊 提交于 2020-01-02 22:29:50
问题 This error occurs when capturing video with AVAssetWriter . However, after calling AVAssetWriter's finishWriting inside of endVideoCapture , there isn't another call to start writing again, so why is this occurring? As you can see in the delegate function, captureOutput , we check the recording state before trying to append to the asset writer. The recording state is set to false in endVideoCapture. Optional(Error Domain=AVFoundationErrorDomain Code=-11862 "Cannot append media data after

Can't .append() option to select element

由 蓝咒 提交于 2020-01-02 11:44:52
问题 I have a problem with .append() function. $('#add_row').on('click', function(){ var new_row = $(row_default).clone(); new_row.find('.col-1').text($(this).find('.ass-col-partenza').text()); new_row.find('.col-2').text($(this).find('.ass-col-colore').text()); new_row.find('.col-3').empty().html($select.clone()); $table.append(new_row); console.log('New row added with select: ', $select); }); $('#add_option').on('click', function(){ var option = $('<option/>').val('Value '+idx).text('Text '+idx)

Using “ echo append >> file” recursively

由 这一生的挚爱 提交于 2020-01-02 09:58:47
问题 I want to append a line to the end of every file in a folder. I know can use echo apendthis >> file to append the string to a single file. But what is the best way to do this recursively? 回答1: find . -type f -exec bash -c 'echo "append this" >> "{}"' \; 回答2: Literally or figuratively... Do you mean recusively to be taken literally or figuratively? If you are really in search of a specifically recursive solution, you can do that like so: operate () { for i in *; do if [ -f "$i" ]; then echo

How to add data by columns in csv file using R?

由 荒凉一梦 提交于 2020-01-02 02:21:30
问题 I have information that is contained in vectors, for example: sequence1<-seq(1:20) sequence2<-seq(21:40) ... I want to append that data to a file, so I am using: write.table(sequence1,file="test.csv",sep=",",append=TRUE,row.names=FALSE,col.names=FALSE) write.table(sequence2,file="test.csv",sep=",",append=TRUE,row.names=FALSE,col.names=FALSE) But the issue is that this is added all in one column like: 1 2 3 ... 21 22 ... 40 I want to add that data in columns so that it ends up like: 1 21 2 22

How to add data by columns in csv file using R?

由 丶灬走出姿态 提交于 2020-01-02 02:21:14
问题 I have information that is contained in vectors, for example: sequence1<-seq(1:20) sequence2<-seq(21:40) ... I want to append that data to a file, so I am using: write.table(sequence1,file="test.csv",sep=",",append=TRUE,row.names=FALSE,col.names=FALSE) write.table(sequence2,file="test.csv",sep=",",append=TRUE,row.names=FALSE,col.names=FALSE) But the issue is that this is added all in one column like: 1 2 3 ... 21 22 ... 40 I want to add that data in columns so that it ends up like: 1 21 2 22

Append NSData to a file in Objective C

由 天大地大妈咪最大 提交于 2020-01-02 00:14:10
问题 I'm attempting to download a large file on the iPhone and save it to disk as it is downloaded. Ideally, in: -(void)connection:(NSURLConnection*)connection didReceiveData:(NSData*)data { } I want to append 'data' to a file on disk. I've checked out the NSData documentation. There are functions to write to a file, but I can't see anything to append to an existing file. Does anyone know how I can append this data? Any help much appreciated! Nick. 回答1: You can use a combination of -writeData: and

Kafka的消息格式

由 浪子不回头ぞ 提交于 2020-01-01 17:22:35
Commit Log Kafka储存消息的文件被它叫做log，按照Kafka文档的说法是： Each partition is an ordered, immutable sequence of messages that is continually appended to—a commit log 这反应出来的Kafka的行为是：消息被不断地append到文件末尾，而且消息是不可变的。 这种行为源于Kafka想要实现的功能：高吞吐量，多副本，消息持久化。这种简单的log形式的文件结构能够更好地实现这些功能，不过也会在其它方面有所欠缺，比如检索消息的能力。 而Kafka的行为也决定了它的消息格式。对于Kafka来说， 消息的主体部分的格式在网络传输中和磁盘上是一致的 ，也就是说消息的主体部分可以直接从网络读取的字节buffer中写入到文件(部分情况下)，也可以直接从文件中copy到网络，而不需要在程序中再加工，这有利于降低服务器端的开销，以及提高IO速度(比如使用zero-copy的传输)。 这也就决定了Kafka的消息格式必须是适于被直接append到文件中的。当然啥都可以append到文件后面，问题在于怎么从文件中拆分出来一条条记录。 记录的划分以及消息的格式 对于日志来说，一条记录以"\n"结尾，或者通过其它特定的分隔符分隔，这样就可以从文件中拆分出一条一条的记录

Javascript for conditional URL append or redirect based on window.location.href

由 自闭症网瘾萝莉.ら 提交于 2020-01-01 14:45:13
问题 I am trying to make a bookmarklet that when clicked will check the URL of the current tab/window to see if it contains 'char1' and/or 'char2' (a given character). If both chars are present it redirects to another URL, for the other two it will append the current URL respectively. I believe there must be a more elegant way of stating this than the following (which has so far worked perfectly for me) but I don't have great knowledge of Javascript. My (unwieldy & repetitive) working code

Is it possible to append an element to a JavaScript nodeList?

由 穿精又带淫゛_ 提交于 2020-01-01 08:44:23
问题 I'm generating content dynamically, so I'm often ending up with documentFragments which I'm querying using querySelectorAll or querySelector returning a nodeList of elements inside my documentFragment. From time to time I would like to add an item to a list, but I can't find anything online on whether this is even possible. I tried it like this: document.querySelectorAll(".translate").item(length+1) = document.createElement("div"); and this: document.querySelectorAll(".translate").shift

Python - appending to a pickled list

由 主宰稳场 提交于 2020-01-01 08:20:48
问题 I'm struggling to append a list in a pickled file. This is the code: #saving high scores to a pickled file import pickle first_name = input("Please enter your name:") score = input("Please enter your score:") scores = [] high_scores = first_name, score scores.append(high_scores) file = open("high_scores.dat", "ab") pickle.dump(scores, file) file.close() file = open("high_scores.dat", "rb") scores = pickle.load(file) print(scores) file.close() The first time I run the code, it prints the name
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