trim

问题 I am using this function to build a pig latin translator and seem to have everything figured out except for the .trim() part. What should I do different? function ParseText() { var myText = "asdf\n hat\n cat dog\n apple"; var lines = myText.split("\n"); var results = ""; for (var i = 0, len = lines.length; i < len; i++) { lines[i].trim(); var words = lines[i].split(" "); for (var j = 0, lenght = words.length; j < lenght; j++) { var word = words[j]; if (word.charAt(0) == "a" || word.charAt(0)

问题 I have some whitespace at the begining of a paragraph in a text field in MySQL. Using trim($var_text_field) in PHP or TRIM(text_field) in MySQL statements does absolutely nothing. What could this whitespace be and how do I remove it by code? If I go into the database and backspace it out, it saves properly. It's just not being removed via the trim() functions. 回答1: function UberTrim($s) { $s = preg_replace('/\xA0/u', ' ', $s); // strips UTF-8 NBSP: "\xC2\xA0" $s = trim($s); return $s; } The

问题 I have to merge the audio file and recorded voice.For example the recorded voice is 47seconds. I have to cut or trim the 4minutes audio song to 47seconds. And merge the audio file. var url:NSURL? if self.audioRecorder != nil { url = self.audioRecorder!.url } else { url = self.soundFileURL! } print("playing \(url)") do { self.newplayer = try AVPlayer(URL: url!) let avAsset = AVURLAsset(URL: url!, options: nil) print("\(avAsset)") let audioDuration = avAsset.duration let totalSeconds =

问题 I have a data set wich looks like: > data<-c( "IGHV1-2*02 F, or IGHV1-2*03 F","IGHV3-23*01 F, or > IGHV3-23*04 F","IGHV2-70*01 F","IGHV7-4-1*01") I would like to keep the first appearance of "V1-2" for example and delete anything which follows (including the "*"). So I tried the following: > data.substr<-substr(data,4,9) > data.substr1<-gsub("*","",data.substr) but I still cant get rid of the "*", probably because it serves as a placeholder... Does anyone have an idea? 回答1: gsub("[*].*$",""

问题 Hi is there a better and faster way to clean many characters from beginning of a string? I have this one, but is this really the fastest way? $description_new = ltrim($description_new, '###'); $description_new = ltrim($description_new, '.'); $description_new = ltrim($description_new, ','); $description_new = ltrim($description_new, '!'); $description_new = ltrim($description_new, '?'); $description_new = ltrim($description_new, ')'); $description_new = ltrim($description_new, '('); Thanks Nik

问题 Hi is there a better and faster way to clean many characters from beginning of a string? I have this one, but is this really the fastest way? $description_new = ltrim($description_new, '###'); $description_new = ltrim($description_new, '.'); $description_new = ltrim($description_new, ','); $description_new = ltrim($description_new, '!'); $description_new = ltrim($description_new, '?'); $description_new = ltrim($description_new, ')'); $description_new = ltrim($description_new, '('); Thanks Nik

问题 I wrote a function to trim white space characters from a string in C. My concern is the last line in the trim() function below, where the source is contained in the destination. The test cases all turned out fine, along with some other testing. Can copying all or a portion of a string where the source and destination are in the same memory cause weird problems? Source code: #include <stdio.h> #include <string.h> void trim(char *line) { int i, len = strlen(line); char *ptr, whitespace[] = " \t

问题 How to remove leading / trailing zeros from a NumPy array? Trim_zeros works only for 1D. 回答1: The following function works for any dimension: def trim_zeros(arr, margin=0): ''' Trim the leading and trailing zeros from a N-D array. :param arr: numpy array :param margin: how many zeros to leave as a margin :returns: trimmed array :returns: slice object ''' s = [] for dim in range(arr.ndim): start = 0 end = -1 slice_ = [slice(None)]*arr.ndim go = True while go: slice_[dim] = start go = not np

问题 How to remove leading / trailing zeros from a NumPy array? Trim_zeros works only for 1D. 回答1: The following function works for any dimension: def trim_zeros(arr, margin=0): ''' Trim the leading and trailing zeros from a N-D array. :param arr: numpy array :param margin: how many zeros to leave as a margin :returns: trimmed array :returns: slice object ''' s = [] for dim in range(arr.ndim): start = 0 end = -1 slice_ = [slice(None)]*arr.ndim go = True while go: slice_[dim] = start go = not np

问题 I referred FFMPEG not "cutting" as expected to split video in chunks in below format: 00:00:00 - 00:00:01 00:00:01 - 00:00:02 00:00:02 - 00:00:03 00:00:03 - 00:00:04 00:00:04 - 00:00:05 Here is the command i used: String[] cmd1 = new String []{"-ss", "00:00:00.000", "-i", inputVideoUrl, "-t", "00:00:01.000", "-c:v", "libx264", "-strict", "-2", outputPath}; String[] cmd2 = new String []{"-ss", "00:00:01.000", "-i", inputVideoUrl, "-t", "00:00:02.000", "-c:v", "libx264", "-strict", "-2",