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Writing a Python list of lists to a csv file
...
Python's built-in CSV module can handle this easily:
import csv
with open("output.csv", "wb") as f:
writer = csv.writer(f)
writer.writerows(a)
This assumes your list is defined as a, as it is in your question. You can tweak t...
【软著】软件著作权证书申请流程及注意事项，模板分享 - App Inventor 2 中...
...：以 ;;; 开头的注释行
正则：^;;;.*$\r?\n?
》》 删除 <!-- xxxx --> 这种html块注释，直接匹配 <!--(.|[\r\n])*?-->
》》删除空白行 Notepad++ > 编辑 > 行操作 > 移除空行
》》 ^\s*\n 删除只有...
How to fix 'android.os.NetworkOnMainThreadException'?
...ead. Run your code in AsyncTask:
class RetrieveFeedTask extends AsyncTask<String, Void, RSSFeed> {
private Exception exception;
protected RSSFeed doInBackground(String... urls) {
try {
URL url = new URL(urls[0]);
SAXParserFactory factory = SAXParserFa...
What's the need of array with zero elements?
...rom the fact that your style of writing malloc makes you repeat yourself multiple times and if ever the type of action changes, you have to fix it multiple times. Compare the following two for yourself and you will know: struct some_thing *variable = (struct some_thing *)malloc(10 * sizeof(struct so...
iOS 7 style Blur view
...in iOS 7's control center view. From that, I created the GPUImageiOS7BlurFilter class that encapsulates the proper blur size and color correction that Apple appears to be using here. This is how GPUImage's blur (on the right) compares to the built-in blur (on the left):
I use a 4X downsampling /...
Java logical operator short-circuiting
... - it is not necessary to know what the right-hand side is because the result can only be false regardless of the value there
true || ... - it is not necessary to know what the right-hand side is because the result can only be true regardless of the value there
Let's compare the behaviour in a sim...
How do I write JSON data to a file?
...ding is not necessary since the output of json.dump is ASCII-only by default. If you can be sure that your code is never run on legacy Python versions and you and the handler of the JSON file can correctly handle non-ASCII data, you can specify one and set ensure_ascii=False.
–...
Regular expression for matching latitude/longitude coordinates?
....01;
Double latitudeToTest = -90.0;
while(latitudeToTest <= 90.0){
boolean result = df.format(latitudeToTest).matches(LATITUDE_PATTERN);
log.info("Latitude: tested {}. Result (matches regex): {}", df.format(latitudeToTest), result);
assertThat(...
What is the difference between JavaConverters and JavaConversions in Scala?
...u're better off calling methods from JavaConversions directly; e.g.:
List<String> javaList = new ArrayList<String>(Arrays.asList("a", "b", "c"));
System.out.println(javaList); // [a, b, c]
Buffer<String> scalaBuffer = JavaConversions.asScalaBuffer(javaList);
System.out.println(sca...
Python __str__ versus __unicode__
...thon 2.6.2, I recently got tripped up because instances of a particular built-in Exception subclass gave different results with str(e) and unicode(e). str(e) gave user-friendly output; unicode(e) gave different, user-unfriendly output. Is this considered buggy behavior? The class is UnicodeDecodeE...