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Truncate a string straight JavaScript
I'd like to truncate a dynamically loaded string using straight JavaScript. It's a url, so there are no spaces, and I obviously don't care about word boundaries, just characters.
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How can I format my grep output to show line numbers at the end of the line, and also the hit count?
...null myfile.txt
2:example two null,
4:example four null,
Combine with awk to print out the line number after the match:
$ grep -in null myfile.txt | awk -F: '{print $2" - Line number : "$1}'
example two null, - Line number : 2
example four null, - Line number : 4
Use command substitution to p...
Call removeView() on the child's parent first
First a little background:
11 Answers
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Connect Java to a MySQL database
...d way of doing things. The better way is to get a DataSource, either by looking one up that your app server container already configured for you:
Context context = new InitialContext();
DataSource dataSource = (DataSource) context.lookup("java:comp/env/jdbc/myDB");
or instantiating and configurin...
Structs versus classes
... I'll put them in a generic list and when they are, I'll loop them and check value a and maybe update value b .
10 Answe...
What is a PDB file?
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A PDB file contains information for the debugger to work with. There's less information in a Release build than in a Debug build anyway. But if you want it to not be generated at all, go to your project's Build properties, select the Release configuration, click on "Advanced..." ...
How to fix the uninitialized constant Rake::DSL problem on Heroku?
...lar to the ones in these questions , except mine are occuring on Heroku :
5 Answers
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How can I have linebreaks in my long LaTeX equations?
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\end{split}
\end{equation}
Both environments require the amsmath package.
See also aligned as pointed out in an answer below.
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How to start jenkins on different port rather than 8080 using command prompt in Windows?
I have jenkins.war and I started it from command prompt in Windows as:
16 Answers
16
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Javascript - removing undefined fields from an object [duplicate]
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A one-liner using ES6 arrow function and ternary operator:
Object.keys(obj).forEach(key => obj[key] === undefined ? delete obj[key] : {});
Or use short-circuit evaluation instead of ternary: (@Matt Langlois, thanks for the info!)
Object.keys(obj).forEach(key => obj[key] === undefin...