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i wrote code generate 10 characters randomly. math.random() gives decimal tostring(36) , numbers replaced. math.random().tostring(36).replace(/[^a-z]+/g,'').substr(1,10); does have hint why firefox (47.0) , chrome (51) don't handle equally? chrome tests: math.random().tostring(36).replace(/[^a-z]+/g,'').substr(1,10); "spkcirhyzb" "gcqbrmulxe" "sallvbzqbk" "pcdcufhqet" "knfffqsytm" firefox tests: math.random().tostring(36).replace(/[^a-z]+/g,'').substr(1,10); "zxntpvn" "hebfyxlt" "zclj" "ormtqw" "cfbsnye" live version: for (var n = 0; n < 5; ++n) { console.log(math.random().tostring(36).replace(/[^a-z]+/g,'').substr(1,10)); } update (string average): var test; var count = 0; (var n = 0; n < 1000; ++n) { test = math.random().tostring(36).replace(/[^a-z]+/g,'').substr(1,10); cou...

i have got 1500 rows of travels. in column have got total time on travel, in column b total km driven. in column c did calculation on average speed of specific travel. whats best way calculate average speed of travels? lengths 0 20 kms approx, time shorter 1 hour. first eliminated travels shorter 2 km managed frequency table , have written frequencies of speeds in 0-5,5-10,... km/h. can histogram, should eliminate more data or how approach problem? in cell enter: =sum(b:b)/sum(a:a) a common error try average values in column c .

i'm new advanced installer. after installing file setup, need run ".bat" file before running ".exe" file every time. found add it, setting it's attributes (hidden, vital , system), need run every time before lunching application. please me, thanks if you're launching application finish action dialogs page, here steps: go custom actions page , add launch file custom action without sequence launch bat file enable custom action's "when system being modified (deferred)" , "run under system account full privileges (no impersonation)" options go dialogs page, select exitdialog first time install in install sequence select finish button go published events tab , enable "show events" option add "execute custom action" event passing in "launch file" created above argument set event's condition checkbox's name bat doesn't execute unless user selects checkbox launch applicatio...

i having difficulties getting code work every selector. have made 2 accordions opening css animation. issue second accordion doesn't work, , animation doesn't work separately both accordions. here source: jsfiddle here jquery im using $('#accordion').find('.accordion-toggle').click(function() { //expand or collapse panel $(this).next().slidetoggle('slow'); //hide other panels $(".accordion-content").not($(this).next()).slideup('fast'); if ($('img').hasclass('moved')) { $('img').removeclass('moved'); } else { $('img').addclass('moved'); } }); try following code ,replace id class use find() find elements relative accordion-toggle $('.accordion').find('.accordion-toggle').click(function() { //expand or collapse panel $(this).next('.accordion-content').slidetoggle('slow'); //hide other panels $("...

i have django project in allows user start multiple subprocesses @ time. processes may take time , user can continue working other aspects of app. @ instance user can view running processes , poll 1 of them check if over. need poll process using pid. popen.poll() expects subprocess.peopen object while have pid of object. how can desired result? in models.py: class runningprocess(models.model): #some other fields p_id=models.charfield(max_length=500) def __str__(self): return self.field1 in views.py: def run_process(): .... p= subprocess.popen(cmd, shell =true, stdout=subprocess.pipe, stderr=subprocess.stdout) new_p=runningprocess() new_p.p_id=p.pid .... new_p.save() return httpresponseredirect('/home/') def check(request,pid): #here want able poll subprocess using p_id e.g like: checkp = pid.poll() #this statement wrong if checkp none: else: else i need valid statement i...

this question has answer here: python try-finally 1 answer why function not raise exception? it's apparently not caught. def f(): try: raise exception finally: return "ok" print(f()) # ok this explicitly explained in the documentation : if exception occurs in of clauses , not handled, exception temporarily saved. finally clause executed. [..] if finally clause executes return or break statement, the saved exception discarded

i using arima function intraday forecasting. data available every 15 minute in day. in code below, working fine except few values of in loop. output displayed i=223. predict function produces nan values. have checked dataset, there no nan value there. kindly suggest me how rid of problem. predict1=c() predict2=c() for(i in 1:456){ y1n=ts(nbl$nbp[(12385+(i-1)*4):(15356+(i-1)*4)],frequency=96) y1n[which(is.na(y1n))]=y1n[which(is.na(y1n))-96] arima1=arima(y1n,order=c(1,1,0),seasonal=c(2,1,1),method="css") predict1=predict(arima1,8) predict2[(((i-1)*4)+1):(((i-1)*4)+4)]=predict1$pred[5:8] } arima1 call: arima(x = y1n, order = c(1, 1, 0), seasonal = c(2, 1, 1), method = "css") coefficients: ar1 sar1 sar2 sma1 0.0241 -0.1122 -0.1068 -0.7830 s.e. 0.0188 0.0240 0.0224 0.0189 sigma^2 estimated 1490: part log likelihood = -14583.05 > predict1=predict(arima1,8) > predict1 $pred time serie...