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Convert Elixir string to integer or float
...er directly. If you want to do that, see @Szymon Jeż answer with String.to_integer/1
– user4275029
Sep 26 '16 at 12:27
6
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Significance of -pthread flag when compiling
...plied to both the compiling and linking stage while others don't use it at all and just pass -lpthread to the linking stage.
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Toggle Checkboxes on/off
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You can write:
$(document).ready(function() {
$("#select-all-teammembers").click(function() {
var checkBoxes = $("input[name=recipients\\[\\]]");
checkBoxes.prop("checked", !checkBoxes.prop("checked"));
});
});
Before jQuery 1.6, when we only ...
可重入函数、不可重入函数及线程安全 - C/C++ - 清泛网 - 专注C/C++及内核技术
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fchown
lstat
setgid
symlink
aio_error
fcntl
mkdir
setpgid
sysconf
aio_return
fdatasync
mkfifo
setsid
tcdrain
aio_suspend
fork
open
setsockop...
How do you write a migration to rename an ActiveRecord model and its table in Rails?
...ble_name
end
end
I had to go and rename the model declaration file manually.
Edit:
In Rails 3.1 & 4, ActiveRecord::Migration::CommandRecorder knows how to reverse rename_table migrations, so you can do this:
class RenameOldTableToNewTable < ActiveRecord::Migration
def change
rena...
Download File Using Javascript/jQuery
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A webpage cannot open a new tab automatically. To force the browser to download, get the server to send the pdf file with a nonsense MIME-type, such as application/x-please-download-me
– Randy the Dev
Sep 20 '10 at 7:55
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What is the difference between the OAuth Authorization Code and Implicit workflows? When to use each
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The access_token is what you need to call a protected resource (an API). In the Authorization Code flow there are 2 steps to get it:
User must authenticate and returns a code to the API consumer (called the "Client").
The "client" of the API (usually your web s...
Cast a Double Variable to Decimal
... No because it will throw an OverflowException double vol_y = (double)Decimal.MaxValue + 10E+28D; Console.WriteLine("Convert.ToDecimal(vol_y) = " + Convert.ToDecimal(vol_y));
– ToXinE
Dec 1 '14 at 15:23
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find -exec with multiple commands
...e? this is failing: find ./* -exec grep -v 'COLD,' {} \; -exec egrep -i "my_string" {} \;
– rajeev
Jan 22 '13 at 16:08
53
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Stack, Static, and Heap in C++
...t understood very well these three concepts. When do I have to use dynamic allocation (in the heap) and what's its real advantage? What are the problems of static and stack? Could I write an entire application without allocating variables in the heap?
...