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How do I get and set Environment variables in C#?
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I ran into this while working on a .NET console app to read the PATH environment variable, and found that using System.Environment.GetEnvironmentVariable will expand the environment variables automatically.
I didn't want that to happen...that means folders in the path suc...
RegEx backreferences in IntelliJ
... of information that solved my related problem: i'm replacing quote-plus wrappers around variables with dollar-curly wrappers, ie, '+ var +' to ${var} in some template strings and couldn't figure out why intellij wouldn't finish the replacement. turns out $ needs to be escaped in the replacement.
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Tainted canvases may not be exported
... likely on your local drive!).
While testing try these workarounds:
Put all page related files (.html, .jpg, .js, .css, etc) on your desktop (not in sub-folders).
Post your images to a site that supports cross-domain sharing (like dropbox.com). Be sure you put your images in dropbox's public fol...
How to validate GUID is a GUID
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When I'm just testing a string to see if it is a GUID, I don't really want to create a Guid object that I don't need. So...
public static class GuidEx
{
public static bool IsGuid(string value)
{
Guid x;
return Guid.TryParse(value, out x);
}
}
And here's how ...
Indenting #defines
I know that #define s, etc. are normally never indented. Why?
8 Answers
8
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Difference between 2 dates in SQLite
...noon UTC on the origin date. That's usually not what you need, unless you happen to live 12 hours west of Greenwich. E.g. if you live in London, this morning is on the same julianday as yesterday afternoon.
– JulianSymes
Aug 24 '13 at 11:57
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How to include another XHTML in XHTML using JSF 2.0 Facelets?
...real world examples of advanced Facelets templating, check the src/main/webapp folder of Java EE Kickoff App source code and OmniFaces showcase site source code.
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Replacement for “rename” in dplyr
...which does keep it consistent with the rest of the dplyr functions. Personally, I don't think of it as a problem--you get used to new things quickly especially when it means a significant speedup in your data processing.
– vergilcw
Feb 3 '14 at 15:47
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How can I generate an MD5 hash?
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You need java.security.MessageDigest.
Call MessageDigest.getInstance("MD5") to get a MD5 instance of MessageDigest you can use.
The compute the hash by doing one of:
Feed the entire input as a byte[] and calculate the hash in one operation with md.digest(bytes)...
Change values while iterating
...", ""},
&Attribute{"bar", ""},
}}
for _, attr := range n.Attr {
if attr.Key == "href" {
attr.Val = "something"
}
}
for _, v := range n.Attr {
fmt.Printf("%#v\n", *v)
...