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Co-variant array conversion from x to y may cause run-time exception
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The most straight forward "solution"
flPanel.Controls.AddRange(_list.AsEnumerable());
Now since you are covariantly changing List<LinkLabel> to IEnumerable<Control> there is no more concerns since it is not possible to "add" an item to an enumerable.
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Difference between __str__ and __repr__?
What is the difference between __str__ and __repr__ in Python?
23 Answers
23
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Fastest way to check if a string matches a regexp in ruby?
...y
require 'benchmark'
str = "aacaabc"
re = Regexp.new('a+b').freeze
N = 4_000_000
Benchmark.bm do |b|
b.report("str.match re\t") { N.times { str.match re } }
b.report("str =~ re\t") { N.times { str =~ re } }
b.report("str[re] \t") { N.times { str[re] } }
b.report("re =~ str...
Equivalent to 'app.config' for a library (DLL)
... is very important to read the appcfg values, the file name should be "DLL_NAME.DLL.CONFIG"
– SaddamBinSyed
Dec 10 '17 at 5:33
2
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Is it possible to await an event instead of another async method?
...kCompletionSource<object> continueClicked;
private async void Button_Click_1(object sender, RoutedEventArgs e)
{
// Note: You probably want to disable this button while "in progress" so the
// user can't click it twice.
await GetResults();
// And re-enable the button here, possibly ...
Doing something before program exit
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32
If you want something to always run, even on errors, use try: finally: like this -
def main():...
How to save/restore serializable object to/from file?
...ileStream(path, FileMode.Open)) //double check that...
{
XmlSerializer _xSer = new XmlSerializer(typeof(SomeClass));
var myObject = _xSer.Deserialize(fs);
}
NOTE: This code hasn't been compiled, let alone run- there may be some errors. Also, this assumes completely out-of-the-box seriali...
How to concatenate two MP4 files using FFmpeg?
...puts).
ffmpeg -i opening.mkv -i episode.mkv -i ending.mkv \
-filter_complex "[0:v] [0:a] [1:v] [1:a] [2:v] [2:a]
concat=n=3:v=1:a=1 [v] [a]" \
-map "[v]" -map "[a]" output.mkv
Note that this method performs a re-encode.
2. concat demuxer
Use this method wh...
How can I pad an int with leading zeros when using cout
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AraKAraK
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Generating random numbers in Objective-C
... C Library (libc, -lc)
SYNOPSIS
#include <stdlib.h>
u_int32_t
arc4random(void);
void
arc4random_stir(void);
void
arc4random_addrandom(unsigned char *dat, int datlen);
DESCRIPTION
The arc4random() function uses the key stream generator employed by th...