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How do you execute an arbitrary native command from a string?
...her path\file.ext"'
iex "& $command"
Likely, you could handle nearly all cases by detecting if the first character of the command string is ", like in this naive implementation:
function myeval($command) {
if ($command[0] -eq '"') { iex "& $command" }
else { iex $command }
}
But...
How do you sort a list in Jinja2?
...ilter allows you to specify an attribute to sort by:
{% for movie in movie_list|sort(attribute='rating') %}
See http://jinja.pocoo.org/docs/templates/#sort
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PHP and MySQL - how to avoid password in source code? [duplicate]
I have a small PHP application storing data in a MySQL database. Currently username / password are hard-coded in the PHP code. A situation I do not really like, for example, since the code is also available in a repository.
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Set markers for individual points on a line in Matplotlib
... to plot lines on a figure. Now I would now like to set the style, specifically the marker, for individual points on the line. How do I do this?
...
Method overloading in Objective-C?
...sign pattern)
Here's a simple example on how function overloading works:
__attribute__((overloadable)) float area(Circle * this)
{
return M_PI*this.radius*this.radius;
}
__attribute__((overloadable)) float area(Rectangle * this)
{
return this.w*this.h;
}
//...
//In your Obj-C methods you...
msvcr110d.dll!_CrtIsValidHeapPointer(const void * pUserData) 行 2036 ...
msvcr110d.dll!_CrtIsValidHeapPointer(const void * pUserData) 行 2036 错误解析可能原因：DLL和EXE主程序使用的不是同一个堆造成。解决办法：1. 采用谁分配谁释放的原则；2. 绕过 new 和 delete，使用 GlovalAlloc...
可能原因1：DLL和EXE主程序使用的...
gdb打印c++ std::vector元素内容 - C/C++ - 清泛网 - 专注C/C++及内核技术
gdb打印c++ std::vector元素内容gdb_vector_print使用GDB调试程序或coredump时，直接 p vec 打印的是vector内部成员的信息，不能直观输出元素的内容。通过打印内部元素地址内容的方式，查看vector元素内容，不限gcc版本：(gdb) 使用GDB调试程...
Unique fields that allow nulls in Django
...pty string by providing your own customized model form for Foo with a clean_bar method that turns the empty string into None:
class FooForm(forms.ModelForm):
class Meta:
model = Foo
def clean_bar(self):
return self.cleaned_data['bar'] or None
class FooAdmin(admin.ModelAdmin...
Error in strings.xml file in Android
... This can cause a problem when you have a lot of strings and use replace all. See my answer.
– Dan Bray
Oct 23 '18 at 14:08
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Rails I18n validation deprecation warning
... the following line inside the Rails::Application body
config.i18n.enforce_available_locales = true
The possible values are:
false: if you
want to skip the locale validation
don't care about locales
true: if you
want the application to raise an error if an invalid locale is passed (or)
wan...