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问题 Please look at the following link to see my code in action: http://codepen.io/DigitalSquid/pen/mAkuC How can I make the bg color appear on page load? 回答1: on window.load call that function with the selectbox ids.. try this window.onload=function(){ colourFunction(document.getElementById('select1')); colourFunction(document.getElementById('select2')); }; 回答2: Call colourFunction() for each select at load time: function initialColours() { colourFunction(document.getElementById('select1'));

问题 I load a big plist file from url and I must wait for some seconds before I can use the application. Is there some solution? How it can be loaded in background? Is GCD what I need? How it can be implemented? My code: NSString *urlStr = [[NSString alloc] initWithFormat:@"http://www.domain.com/data.xml"]; NSURL *url = [NSURL URLWithString:urlStr]; NSDictionary *dict = [[NSDictionary alloc] initWithContentsOfURL:url]; 回答1: You could create a new thread to do so Please check the following //Create

问题 I have three python 2.7 files edit in Spyder 3.1.4 in Anaconda 4.3.1 (1). TestClass.py ：Just define a class import numpy as np class TestClass: def getArray(self): return np.zeros((3,4)); (2). a1.py from TestClass import *; tt=TestClass(); (3). a2.py #just a empty python file When I "runfile" "a1.py" in Spyder, a TestClass instance tt was created, and I run following code in Spyder's IPython console: tt.getArray() Out[9]: array([[ 0., 0., 0., 0.], [ 0., 0., 0., 0.], [ 0., 0., 0., 0.]]) It

问题 Followup question from this one: Swing font names do not match? (Making a font chooser, and am trying to display the default system font in a JComboBox) It appears there are logical and physical fonts. The logical fonts are: Serif, SansSerif, Monospaced, Dialog, and DialogInput. These fonts are dynamic, and their respective physical font (the font that they will represent during program execution) are decided when the program loads. I need to access the physical font of these logical fonts.

问题 I am currently doing some I/O intensive load-testing using python. All my program does is to send HTTP requests as fast as possible to my target server. To manage this, I use up to 20 threads as I'm essentially bound to I/O and remote server limitations. According to 'top', CPython uses a peak of 130% CPU on my dual core computer. How is that possible ? I thought the GIL prevented this ? Or is it the way Linux 'counts' the resources consumed by each applications ? 回答1: 100 percent in top

问题 I have built extjs 5 app using sencha cmd and I want to use it in my custom hmtl page. I have the following structure: extjsapp .sencha app build ext packages ...... bootstrap.js bootstrap.json app.js ....... customapp index.html script.js What I want to do is in my customapp/index.html I request bootstrap.js and it should load all packages and ext from extjsapp folder. By default it tries to load them from customapp/ext which is relative to where boostrap.js is used. How can I make/build it

问题 I have downloaded the latest Eclipse (3.6) for my Linux machine and extracted tar.gz to the /opt/eclipse directory as root. I started Eclipse as a normal user and successfully installed some plug-ins through Eclipse. The plug-ins are visible under "Installed software" from Eclipse, but they doesn't seem to be working - no new perspectives that should be there, no features, nothing. Then I looked inside my home folder and found the following directory: .eclipse/org.eclipse.platform_3.5.0

问题 I'm getting a mysql Error Code: Data truncated for column when doing a LOAD DATA LOCAL INFILE. Running MySQL on a Win7 PC. Using the SQL Workbench, I have a new table called full_daily_data. I created it with this script: CREATE TABLE full_daily_data ( Run_Date DATE, Run_Time TIME, Bar_Num INT, Symbol VARCHAR(9) NOT NULL, Trade_Date DATE, Day_Open FLOAT, Day_High FLOAT, Day_Low FLOAT, Day_Close FLOAT, Prior_Open FLOAT, Prior_High FLOAT, Prior_Low FLOAT, Prior_Close FLOAT, Pct_UpDn_Since_Open

问题 I have this problem in my application: Step 1 - create an file (xml) and put some content in it Step 2 - a 3rd party application will open the file and get the info from the file made in step 1. Step 3 - delete the file again. The first question that I have is about this part of the code: XmlDocument xmlDoc = new XmlDocument(); DataSet ds = //use a method to put in the data xmlDoc.LoadXml(ds.GetXml()); xmlDoc.Save("Filename"); // ... Process.Start(startInfo); Is my assumption correct that the

问题 MIT Scheme's (load ...) procedure apparently takes in an environment as a parameter. Is there any way I could "clone" the current environment and pass it there, so that I can isolate the file's environment from my own? (I've looked here but I haven't found anything...) 回答1: How about something like this ? (define (clone-env env) (let ((bindings (environment-bindings env))) (make-top-level-environment (map car bindings) (map cadr bindings)))) 1 ]=> (define foo 1) ;Value: foo 1 ]=> (eq? (the