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MySQL get the date n days ago as a timestamp
... imageUploader: {
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How to get the raw value an field?
... valid floating-point number, then set it to the empty
string instead.
By specifying the type (<input type="number">) you're asking the browser to do some work for you. If, on the other hand, you'd like to be able to capture the non-numeric input and do something with it, you'd have to rel...
cscope or ctags why choose one over the other? [closed]
...pe needs a file containing a list of names of files to parse. Also in vim, by default there are no key bindings set up - you need to run :cscope blah blah manually.
To solve the fist problem I've got a bash script cscope_gen.sh that looks like this:
#!/bin/sh
find . -name '*.py' \
-o -name '*.java...
Get week of year in JavaScript like in PHP
...dit
Here is some code based on the links provided and that posted eariler by Dommer. It has been lightly tested against results at http://www.merlyn.demon.co.uk/js-date6.htm#YWD. Please test thoroughly, no guarantee provided.
Edit 2017
There was an issue with dates during the period that daylight...
How to check for a valid Base64 encoded string
...from C# 7.2
public static bool IsBase64String(string base64)
{
Span<byte> buffer = new Span<byte>(new byte[base64.Length]);
return Convert.TryFromBase64String(base64, buffer , out int bytesParsed);
}
shar...
How can I clear scrollback buffer in Tmux?
...r bind makes it so you don't have to issue the tmux command prefix (ctrl-b by default). I use bash, so ctrl-l already does the equivalent of typing "clear" at the command line. With these two keys I get a nice ctrl-l, ctrl-k combo, which moves all the scroll buffer off the screen (the "clear") and...
foldl versus foldr behavior with infinite lists
...foldl is nearly useless!
But what if we want to produce a non-lazy result by folding over a large (but not infinite) list? For this, we want a strict fold, which the standard libraries thoughfully provide:
foldl' is:
Left associative: f ( ... (f (f (f (f z x1) x2) x3) x4) ...) xn
Tail recursive:...
How can I dynamically create derived classes from a base class
... names to come in scope,
just do the same, but use the dictionary returned by the globals()
call instead of an arbitrary dictionary:
name = "SpecialClass"
globals()[name] = ClassFactory(name, params)
instance = SpecialClass(...)
(It indeed would be possible for the class factory function to inse...
How can I reset or revert a file to a specific revision?
...l. It's a convention implemented in many different commands (and supported by getopt).
– Greg Hewgill
Mar 4 '16 at 17:47
2
...
Serializing an object to JSON
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