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When to use lambda, when to use Proc.new?
....new is surprising. However when you consider that Proc.new behaves like a block this is not surprising as that is exactly how blocks behave. lambas on the other hand behave more like methods.
This actually explains why Procs are flexible when it comes to arity (number of arguments) whereas lambdas...
Reset/remove CSS styles for element only
... For example, if an author specifies all: initial on an element it will
block all inheritance and reset all properties, as if no rules
appeared in the author, user, or user-agent levels of the cascade.
This can be useful for the root element of a "widget" included in a
page, which does n...
When to use margin vs padding in CSS [closed]
...
The vertical margins only collapse for block elements. For inline block elements the margins are added both vertically and horizontally. So I am not sure that it is an issue that horizontal margins don't collapse on block elements since they fill their container a...
RichTextBox (WPF) does not have string property “Text”
...
to set RichTextBox text:
richTextBox1.Document.Blocks.Clear();
richTextBox1.Document.Blocks.Add(new Paragraph(new Run("Text")));
to get RichTextBox text:
string richText = new TextRange(richTextBox1.Document.ContentStart, richTextBox1.Document.ContentEnd).Text;
...
How to print HTML content on click of a button, but not the page? [duplicate]
...een {
display: none;
}
.example-print {
display: block;
}
}
<div class="example-screen">You only see me in the browser</div>
<div class="example-print">You only see me in the print</div>
...
typecast string to integer - Postgres
...ing into an integer.
Solution
Create a user-defined function inspired by PHP's intval() function.
CREATE FUNCTION intval(character varying) RETURNS integer AS $$
SELECT
CASE
WHEN length(btrim(regexp_replace($1, '[^0-9]', '','g')))>0 THEN btrim(regexp_replace($1, '[^0-9]', '','g'))::intege...
uwsgi invalid request block size
...for the headers of each request. If you start receiving “invalid request block size” in your logs, it could mean you need a bigger buffer. Increase it (up to 65535) with the buffer-size option.
If you receive ‘21573’ as the request block size in your logs, it could mean you are using th...
What really happens in a try { return x; } finally { x = null; } statement?
...
No - at the IL level you can't return from inside an exception-handled block. It essentially stores it in a variable and returns afterwards
i.e. similar to:
int tmp;
try {
tmp = ...
} finally {
...
}
return tmp;
for example (using reflector):
static int Test() {
try {
return...
Aliases in Windows command prompt
...
Hi, I have used this with cmder to open phpstorm...it opens phpstorm but it keeps opening my last opened project and not the project directory I am currently in...How do I get this to open whichever DIR I am in?
– PA-GW
Dec 17...
How is Node.js inherently faster when it still relies on Threads internally?
...evelopment in the last few years.
It is using threads because:
The O_NONBLOCK option of open() does not work on files.
There are third-party libraries which don't offer non-blocking IO.
To fake non-blocking IO, threads are neccessary: do blocking IO in a separate thread. It is an ugly solution...