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how do i change default browser using c# or batch file

由 [亡魂溺海] 提交于 2019-11-27 09:19:11
title speaks it all. The default browser is saved as an entry in the registry key of windows. The values are saved on a protocol basis like this HKEY_CLASSES_ROOT\[protocol]\shell\open\command Where protocol can be http, https, etc. On how to access/modify registry values inside C#, you can take a look at this article I think you will need to modify atleast two RegistryKeys and set the path to the alternative browser: HKEY_CLASSES_ROOT\http\shell\open\command HKEY_CLASSES_ROOT\htmlfile\shell\open\command An alternative may be to create an additional entry under the Shell key and set it as the

set back default precision C++

由 我的未来我决定 提交于 2019-11-27 08:40:48
I want to control the precision for a double during a comparison, and then come back to default precision, with C++. I intend to use setPrecision() to set precision. What is then syntax, if any, to set precision back to default? I am doing something like this std::setPrecision(math.log10(m_FTOL)); I do some stuff, and I would like to come back to default double comparison right afterwards. I modified like this, and I still have some errors std::streamsize prec = std::ios_base::precision(); std::setprecision(cmath::log10(m_FTOL)); with cmath false at compilation, and std::ios_base also false at

How can I force 2 fields in a Django model to share the same default value?

由 本小妞迷上赌 提交于 2019-11-27 08:36:06
问题 I have a Django model MyModel as shown below. It has two fields of type DateTimeField: my_field1 , my_field2 from django.db import models from datetime import datetime class MyModel(models.Model): my_field1 = models.DateTimeField(default=datetime.utcnow, editable=False) my_field2 = models.DateTimeField( # WHAT DO I PUT HERE? ) I want both fields to default to the value of datetime.utcnow() . But I want to save the same value for both. It seems wasteful to call utcnow() twice. How can I set

Default redirect for Error 404

由 生来就可爱ヽ(ⅴ＜●) 提交于 2019-11-27 07:26:38
I want to introduce a functionality in my ASP.net website that, whenever a request is received for an unknown URL on my domain, the user is redirected to my error_404.htm page in the root of the application. For example, if the request is http://www.mydomain.com/blahblahblah Then instead of returning the standard 404 error page, I want it to redirect the request to http://www.mydomain.com/error_404.htm Update IIS Version 7.5 and .NET Framework Version 4 Update /blah.aspx redirects but /blah does not This is how you configure a custom 404 error page for both ASP.NET and non-ASP.NET requests:

How do you change default stack size for managed executable.net

由 无人久伴 提交于 2019-11-27 07:07:33
问题 We have discovered that one of our auto generated assemblies is throwing a StackOverflowException on new(). This class has (bear with me please) 400+ simple properties that are initialised (most by default(string) etc) in a constructor. We notice that its fine on 64 bits but on 32 bits it goes bang! We need to test if it's reasonable for our use case to create a larger default stack to give us breathing room while we reengineer the code generator. We would esp. interested in solutions that

PHP switch case default

由 安稳与你 提交于 2019-11-27 06:56:06
问题 Will the default of a switch statement get evaluated if there's a matching case before it? ex: switch ($x) { case ($x > 5): print "foo"; case ($x%2 == 0): print "bar"; default: print "nope"; } so for x = 50, you'd see foo and bar , or foo and bar and nope ? 回答1: Yes, if there is no "break", then all actions following the first case matched will be executed. The control flow will "falls through" all subsequent case , and execute all of the actions under each subsequent case , until a break;

How to change PHPStorm 8 default new project location?

由 半城伤御伤魂 提交于 2019-11-27 06:39:03
问题 When I create a new project, I must edit the current project location each time, because our global projects are on: ~/Sites/ However, PHPStorm sets it default as: ~/PhpstormProjects/ How can I change the default location as mine? 回答1: There is no GUI for that. PhpStorm should remember last used folder (when you successfully created new project) and use it by default for next one (does for me; although I'm using the same path since v1 .. maybe this was broken since then). If it does not and

Is a `=default` move constructor equivalent to a member-wise move constructor?

由 这一生的挚爱 提交于 2019-11-27 06:31:22
Is this struct Example { int a, b; Example(int mA, int mB) : a{mA}, b{mB} { } Example(const Example& mE) : a{mE.a}, b{mE.b} { } Example(Example&& mE) : a{move(mE.a)}, b{move(mE.b)} { } Example& operator=(const Example& mE) { a = mE.a; b = mE.b; return *this; } Example& operator=(Example&& mE) { a = move(mE.a); b = move(mE.b); return *this; } } equivalent to this struct Example { int a, b; Example(int mA, int mB) : a{mA}, b{mB} { } Example(const Example& mE) = default; Example(Example&& mE) = default; Example& operator=(const Example& mE) = default; Example& operator=(Example&& mE) = default; }

Generate UUID values by default for each row on column of UUID type in H2 Database Engine

由 让人想犯罪 __ 提交于 2019-11-27 06:21:05
问题 In the H2 database, on a table with a column of UUID data type, how do we specify that we want H2 to generate a UUID value by default when an INSERT omits that field? I know how to generate a UUID. I have read the Question, How to insert a specific UUID in h2 database?. My question is about how to ask H2 to generate the UUID value on my behalf. 回答1: You can use built-in function RANDOM_UUID(): create table test(id int primary key, data uuid default random_uuid()); insert into test(id) values

Why Is `Export Default Const` invalid?

由 五迷三道 提交于 2019-11-27 05:53:10
I see that the following is fine: const Tab = connect( mapState, mapDispatch )( Tabs ); export default Tab; However, this is incorrect: export default const Tab = connect( mapState, mapDispatch )( Tabs ); Yet this is fine: export default Tab = connect( mapState, mapDispatch )( Tabs ); Can this be explained please why const is invalid with export default ? Is it an unnecessary addition & anything declared as export default is presumed a const or such? const is like let , it is a LexicalDeclaration ( VariableStatement, Declaration ) used to define an identifier in your block. You are trying to
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