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What is the correct way to create a single-instance WPF application?
Using C# and WPF under .NET (rather than Windows Forms or console), what is the correct way to create an application that can only be run as a single instance?
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Nested JSON objects - do I have to use arrays for everything?
Is there any way to have nested objects in JSON so I don't have to make arrays out of everything? For my object to be parsed without error I seem to need a structure like this:
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How to create a HashMap with two keys (Key-Pair, Value)?
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Hi, others have x'or the two values when doing hashCode. Why do you use 31? I thought it has something to do with 32-bit integer, but when I think about it it doesn't make sense, because x=1 and y=0 still maps to the same hashcode as x=0 and y=31
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How to write a:hover in inline CSS?
...ass name or an id and use stylesheets to apply the style.
:hover is a pseudo-selector and, for CSS, only has meaning within the style sheet. There isn't any inline-style equivalent (as it isn't defining the selection criteria).
Response to the OP's comments:
See Totally Pwn CSS with Javascript f...
Timeout a command in bash without unnecessary delay
...cked, then the subsequent SIGKILL (9) terminates it.
#
# Based on the Bash documentation example.
# Hello Chet,
# please find attached a "little easier" :-) to comprehend
# time-out example. If you find it suitable, feel free to include
# anywhere: the very same logic as in the original examples...
How do .gitignore exclusion rules actually work?
...t include this" - "ignore this directory (/a/b/c/) but not this one (foo)" doesn't make much sense; "ignore all files in this directory (/a/b/c/*) but not this one (foo)" does. To quote the man page:
An optional prefix ! which negates the pattern; any matching file excluded by a previous patter...
Loop inside React JSX
I'm trying to do something like the following in React JSX (where ObjectRow is a separate component):
66 Answers
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Biggest advantage to using ASP.Net MVC vs web forms
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@ rodbv: Very true, but MVC does sort of push you in the right direction, or at least doesn't make you jump through hoops to do so. So maybe that point should read something like 'makes SoC easier to implement'
– Erik van Brakel
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Associative arrays in Shell scripts
...p[company]}
echo ${newmap[name]}
Depending on the shell, you may need to do a typeset -A newmap instead of declare -A newmap, or in some it may not be necessary at all.
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How do I use Node.js Crypto to create a HMAC-SHA1 hash?
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Documentation for crypto: http://nodejs.org/api/crypto.html
const crypto = require('crypto')
const text = 'I love cupcakes'
const key = 'abcdeg'
crypto.createHmac('sha1', key)
.update(text)
.digest('hex')
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