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Signed versus Unsigned Integers
Am I correct to say the difference between a signed and unsigned integer is:
15 Answers
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Best Practice: Access form elements by HTML id or name attribute?
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Give your form an id only, and your input a name only:
<form id="myform">
<input type="text" name="foo">
Then the most standards-compliant and least problematic way to access your input element is via:
document.getElementById("myform"...
Why does 1==1==1 return true, “1”==“1”==“1” return true, and “a...
I tested the above code in Chrome's console and for some reason, a() returns true, b() returns true, and c() returns false.
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How to log cron jobs?
...og/myjob.log
You might use mail to send emails. Most systems will send unhandled cron job output by email to root or the corresponding user.
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Terminal Multiplexer for Microsoft Windows - Installers for GNU Screen or tmux [closed]
... I was unable to locate the installers for Microsoft Windows for both tmux and GNU Screen.
9 Answers
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Logical operator in a handlebars.js {{#if}} conditional
Is there a way in handlebars JS to incorporate logical operators into the standard handlebars.js conditional operator? Something like this:
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Test if a variable is set in bash when using “set -o nounset”
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I tried this and I'm surprised this works... Everything is correct except according to "info bash", "${WHATEVER-}" should have a ":" (colon) before the "-" (dash) like: "${WHATEVER:-}", and "${WHATEVER+defined}" should have a colon before...
How to get a key in a JavaScript object by its value?
...allowing me to get the key for a value, or do I have to iterate the object and find it out manually?
27 Answers
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Boolean operators && and ||
According to the R language definition , the difference between & and && (correspondingly | and || ) is that the former is vectorized while the latter is not.
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decimal vs double! - Which one should I use and when? [duplicate]
...ubles sometimes lose precision.
My question is when should a use a double and when should I use a decimal type?
Which type is suitable for money computations? (ie. greater than $100 million)
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