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How to check if my string is equal to null?
I want to perform some action ONLY IF my string has a meaningful value. So, I tried this.
27 Answers
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Eclipse JUNO doesn't start
...1 3 июл 17:17 .log drwxr-xr-x 7 max staff 238 3 июл 16:52 .mylyn drwxr-xr-x 37 max staff 1258 29 июн 15:29 .plugins -rw-r--r-- 1 max staff 26 3 июл 17:16 version.ini
– Max Bublikoff
Jul 3 '12 at 13:37
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postgres: upgrade a user to be a superuser?
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ALTER USER myuser WITH SUPERUSER;
You can read more at the Documentation
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Heroku + node.js error (Web process failed to bind to $PORT within 60 seconds of launch)
I have my first node.js app (runs fine locally) - but I am unable to deploy it via heroku (first time w/ heroku as well). The code is below. SO doesn't let me write so much code, so I would just say that the running the code locally as well within my network shows no issue.
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How do I include a pipe | in my linux find -exec command?
...ing to avoid -print and xargs for efficiency reasons. Maybe that's really my problem: find cannot handle piped commands through -exec
– someguy
Nov 20 '08 at 22:09
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Vertically align text to top within a UILabel
..., but you can get the same effect by changing the label's frame. I've made my labels orange so you can see clearly what's happening.
Here's the quick and easy way to do this:
[myLabel sizeToFit];
If you have a label with longer text that will make more than one line, set numberOfLines to...
iOS - Build fails with CocoaPods cannot find header files
...ly set this on the first target. Doing as suggested in this answer solved my problem.
– Troy
Aug 24 '13 at 20:50
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WARNING: UNPROTECTED PRIVATE KEY FILE! when trying to SSH into Amazon EC2 Instance
I'm working to set up Panda on an Amazon EC2 instance.
I set up my account and tools last night and had no problem using SSH to interact with my own personal instance, but right now I'm not being allowed permission into Panda's EC2 instance.
Getting Started with Panda
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Retrieving the last record in each group - MySQL
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MySQL 8.0 now supports windowing functions, like almost all popular SQL implementations. With this standard syntax, we can write greatest-n-per-group queries:
WITH ranked_messages AS (
SELECT m.*, ROW_NUMBER() OVER (PARTIT...
ORA-12514 TNS:listener does not currently know of service requested in connect descriptor
...same machine. (tnsping outputs the location of the directory it uses) - in my case, listener.ora in that directory contained information pertaining to an old database instance that i had uninstalled - quick and dirty way was to copy the entire contents of listener.ora from my current installation of...