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How should one use std::optional?
...
The simplest example I can think of:
std::optional<int> try_parse_int(std::string s)
{
//try to parse an int from the given string,
//and return "nothing" if you fail
}
The same thing might be accomplished with a reference argument instead (as in the following signature), b...
Mockito + PowerMock LinkageError while mocking system class
...ackage (over different dependencies).
With any version higher than Java 7_25 it gives this error.
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Generate class from database table
...ame + ' { get; set; }
'
from
(
select
replace(col.name, ' ', '_') ColumnName,
column_id ColumnId,
case typ.name
when 'bigint' then 'long'
when 'binary' then 'byte[]'
when 'bit' then 'bool'
when 'char' then 'string'
...
WiX tricks and tips
... DestinationFiles="..\Deploy\Setup\$(OutputName) $(AssemblyFileVersion)_$(Platform).msi" />
</Target>
Use heat to harvest files with wildcard (*) Guid. Useful if you want to reuse WXS files across multiple projects (see my answer on multiple versions of the same product). For example, ...
Get current URL of UIWebView
...ow can get a URL, but the url may not be the current URL:
NSString *url = _webView.request.URL.absoluteString;
The correct one is:
NSString *currentURL = [_webView stringByEvaluatingJavaScriptFromString:@"window.location.href"];
...
How to retrieve the current version of a MySQL database management system (DBMS)?
...--------------------+------------------------------------------+
| Variable_name | Value |
+-------------------------+------------------------------------------+
| protocol_version | 10 |
| version ...
Is there a Python Library that contains a list of all the ascii characters?
...hat you want. (docs)
>>> import string
>>> string.ascii_uppercase
'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
If you want all printable characters:
>>> string.printable
'0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!"#$%&\'()*+,-./:;?@[\\]^_`{|}~ \t\n\r\x0b\x0c...
Removing an item from a select box
...ect").removeOption(/^val/i);
- array $("#myselect").removeOption(["myselect_1", "myselect_2"]);
To remove all options, you can do $("#myselect").removeOption(/./);.
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How does Stack Overflow generate its SEO-friendly URLs?
...',' || c == '.' || c == '/' ||
c == '\\' || c == '-' || c == '_' || c == '=')
{
if (!prevdash && sb.Length > 0)
{
sb.Append('-');
prevdash = true;
}
}
else if ((int)c >= 128)
...
Detect if Visual C++ Redistributable for Visual Studio 2012 is installed
....microsoft.com/download/8/B/4/8B42259F-5D70-43F4-AC2E-4B208FD8D66A/vcredist_x64.EXE
Microsoft Visual C++ 2005 Redistributable (x86)
Registry Key: HKLM\SOFTWARE\Classes\Installer\Products\c1c4f01781cc94c4c8fb1542c0981a2a
Configuration: x86
Version: 6.0.2900.2180
Direct Download URL: https://downl...