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When do you use map vs flatMap in RxJava?
...r Exception problem, just throw it with a Non checked exception : RX will call the onError handler for you.
Observable.from(jsonFile).map(new Func1<File, String>() {
@Override public String call(File file) {
try {
return new Gson().toJson(new FileReader(file), Object.c...
PowerShell: Run command from script's directory
...
Holy scripting gods, I'm SO DISAPPOINTED .\_/. — for this killed half of my day! People, seriously? Seriously?..
– ulidtko
Dec 29 '14 at 14:56
2
...
How to tell when UITableView has completed ReloadData?
...other way is to schedule your after-layout code to run later using dispatch_async:
[self.tableView reloadData];
dispatch_async(dispatch_get_main_queue(), ^{
NSIndexPath* indexPath = [NSIndexPath indexPathForRow: ([self.tableView numberOfRowsInSection:([self.tableView numberOfSections]-1)]-1) ...
Regex to match string containing two names in any order
...
IF $_explanation === "awesome" THEN return $THUMBS_UP ENDIF;
– Syed Aqeel
Feb 20 '19 at 6:08
add a comme...
Way to go from recursion to iteration
...ack, heap does not have memory restrictions. See gribblelab.org/CBootCamp/7_Memory_Stack_vs_Heap.html
– yuqli
Aug 28 '18 at 3:22
|
show 9 mo...
server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none
...b certificate used for your gitLab server, and add it to your </git_installation_folder>/bin/curl-ca-bundle.crt.
To check if at least the clone works without checking said certificate, you can set:
export GIT_SSL_NO_VERIFY=1
#or
git config --global http.sslverify false
But that would be fo...
What's the difference between using INDEX vs KEY in MySQL?
... at table info in the latest version of SQLYog it shows KEY keyname (column_name) when I created the table with INDEX keyname (column_name). The fact that it is a synonym explains it perfectly.
– crmpicco
Apr 2 '14 at 10:10
...
Is a view faster than a simple query?
...es.
Update: At least three people have voted me down on this one. With all due respect, I think that they are just wrong; Microsoft's own documentation makes it very clear that Views can improve performance.
First, simple views are expanded in place and so do not directly contribute to performa...
TortoiseGit save user authentication / credentials
...name and password every time you do a pull or push.
Create a file called _netrc with the following contents:
machine github.com
login yourlogin
password yourpassword
Copy the file to C:\Users\ (or another location; this just happens to be where I’ve put it)
Go to command prompt, type setx hom...
How to form tuple column from two columns in Pandas
...rtable with zip. It comes in handy when dealing with column data.
df['new_col'] = list(zip(df.lat, df.long))
It's less complicated and faster than using apply or map. Something like np.dstack is twice as fast as zip, but wouldn't give you tuples.
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