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How to set up Spark on Windows?
...not installed.
(1) Install scala, then unzip spark/hadoop/mahout into the root of C: under their respective product names.
(2) Rename \mahout\bin\mahout to mahout.sh.was (we will not need it)
(3) Compile the following Win32 C++ program and copy the executable to a file named C:\mahout\bin\mahou...
AngularJs $http.post() does not send data
...—do not unserialize natively.
Works like a charm.
CODE
// Your app's root module...
angular.module('MyModule', [], function($httpProvider) {
// Use x-www-form-urlencoded Content-Type
$httpProvider.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded;charset=utf-8';
...
创业者只需要一种素质：成为某个领域的意见领袖 - 资讯 - 清泛网 - 专注C/C...
...传播
说了这么多推广的重要，那么作为普通创业者应该如何去做？我总不能像老罗一样包下一个剧场去做一个发布会吧。
普通人有普通人的方法，那就是一定要成为“意见领袖”，先看看百度百科上对意见领袖是这么定义的...
Understanding checked vs unchecked exceptions in Java
... inside it. But, and a big one - Never ever obscure in underlying original root cause. For ex, Don't ever do following -
try {
attemptLogin(userCredentials);
} catch (SQLException sqle) {
throw new LoginFailureException("Cannot login!!"); //<-- Eat away original root cause, thus obscu...
Force point (“.”) as decimal separator in java
...ing.format which lets you specify the locale:
return String.format(Locale.ROOT, "%.2f", someDouble);
If you're only formatting a number - as you are here - then using NumberFormat would probably be more appropriate. But if you need the rest of the formatting capabilities of String.format, this sh...
How can I programmatically create a new cron job?
...
The best way if you're running as root, is to drop a file into /etc/cron.d
if you use a package manager to package your software, you can simply lay down files in that directory and they are interpreted as if they were crontabs, but with an extra field for t...
How to retrieve a single file from a specific revision in Git?
...is indeed
git show object
git show $REV:$FILE
git show somebranch:from/the/root/myfile.txt
git show HEAD^^^:test/test.py
The command takes the usual style of revision, meaning you can use any of the following:
branch name (as suggested by ash)
HEAD + x number of ^ characters
The SHA1 hash of a giv...
Embedding DLLs in a compiled executable
...re using vs2018 don't forget the FodyWeavers.xml file to be located at the root of your project.
– Alan Deep
Apr 14 '18 at 5:15
4
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How do you detect where two line segments intersect? [closed]
...sted by KingNestor because it's all multiplication and division, no square roots!
I guess there's some potential for divide by zero in there, though it hasn't been an issue in my case. Easy enough to modify to avoid the crash anyway.
// Returns 1 if the lines intersect, otherwise 0. In addition, if ...
Heroku push rejected, no Cedar-supported app detected
...to this error message, but my problem was that my rails app was not in the root directory of my git repo. After I moved the files into the root dir, everything worked.
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