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How do I get and set Environment variables in C#?
...
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 such as '%...
Nested Models in Backbone.js, how to approach
... method.
This should ensure the structure of the nested model when you're reading from the server. Now, you would notice that saving or setting is actually not handled here because I feel that it makes sense for you to set the nested model explicitly using the proper model.
Like so:
image.set({la...
Check whether a path is valid in Python without creating a file at the path's target
...rom this pathname is valid or
# not, ignoring non-existent and non-readable path components.
for pathname_part in pathname.split(os.path.sep):
try:
os.lstat(root_dirname + pathname_part)
# If an OS-specific exception is raised, its error code
...
how to use sed, awk, or gawk to print only what is matched?
...if /.*abc([0-9]+)xyz.*/'
This runs Perl, the -n option instructs Perl to read in one line at a time from STDIN and execute the code. The -e option specifies the instruction to run.
The instruction runs a regexp on the line read, and if it matches prints out the contents of the first set of bracks...
Official way to ask jQuery wait for all images to load before executing something
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With jQuery, you use $(document).ready() to execute something when the DOM is loaded and $(window).on("load", handler) to execute something when all other things are loaded as well, such as the images.
The difference can be seen in the following complete HT...
What is the best JavaScript code to create an img element
... in the above code, if the values weren't hard coded). It's also easier to read (from a JS perspective):
$('#container').append($('<img>', {
src : "/path/to/image.jpg",
width : 16,
height : 16,
alt : "Test Image",
title : "Test Image"
}));
...
Is there a method to generate a UUID with go language
...?
These lines clamp the values of byte 6 and 8 to a specific range. rand.Read returns random bytes in the range 0-255, which are not all valid values for a UUID. As far as I can tell, this should be done for all the values in the slice though.
If you are on linux, you can alternatively call /usr/...
How many double numbers are there between 0.0 and 1.0?
...e-11. Having good precision there is more useful than between 100 and 101. Read floating-point-gui.de for more information.
– Michael Borgwardt
Jun 5 '10 at 7:36
1
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What is /dev/null 2>&1?
...ard output (1), which then discards it as well since standard output has already been redirected.
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Store boolean value in SQLite
...NULL in addition to 0 and 1.
The use of the type name BOOLEAN here is for readability, to SQLite it's just a type with NUMERIC affinity.
Note that CHECK constraints have been supported since SQLite 3.3.0 (2006).
Here are some example INSERTs that will work: (note how strings and floating point nu...