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Openssl is not recognized as an internal or external command
...ple, if the file is unzipped to the location C:\Users\gaurav\openssl-0.9.8k_WIN32, then copy the path C:\Users\gaurav\openssl-0.9.8k_WIN32\bin.
Step 3 Add the path to your system environment path. After your PATH environment variable is set, open the cmd and type this command:
C:\>keytool -expor...
Symfony 2: How do I check if a user is not logged in inside a template?
...OT logged in you can use: {% if not app.user %}
– Mac_Cain13
Feb 11 '13 at 15:49
44
Use {% if is_...
How do I deserialize a JSON string into an NSDictionary? (For iOS 5+)
...zern answer
@implementation NSString (Extensions)
- (NSDictionary *) json_StringToDictionary {
NSError *error;
NSData *objectData = [self dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:objectData options:NSJSONReadingMutableContain...
ImportError: Cannot import name X
...s something like this.
a = module() # import a
# rest of module
a.update_contents(real_a)
For python to be able to work with circular dependencies you must use import x style only.
import x
class cls:
def __init__(self):
self.y = x.y
Since you are no longer referring to the conte...
Map over object preserving keys
...
With Underscore
Underscore provides a function _.mapObject to map the values and preserve the keys.
_.mapObject({ one: 1, two: 2, three: 3 }, function (v) { return v * 3; });
// => { one: 3, two: 6, three: 9 }
DEMO
With Lodash
Lodash provides a function _.mapVa...
How to validate an Email in PHP?
...
You can use the filter_var() function, which gives you a lot of handy validation and sanitization options.
filter_var($email, FILTER_VALIDATE_EMAIL)
PHP Manual filter_var()
Available in PHP >= 5.2.0
If you don't want to change your code t...
SQL Server Installation - What is the Installation Media Folder?
...se that one when you "Browse for SQL server Installation Media"
SQLEXPRADV_x64_ENU.exe > SQLEXPRADV_x64_ENU.zip
7zip will open it (standard Windows zip doesn't work though)
Extract to something like C:\SQLInstallMedia
You will get folders like 1033_enu_lp, resources, x64 and a bunch of files....
How to maintain aspect ratio using HTML IMG tag
...img src="https://upload.wikimedia.org/wikipedia/meta/0/08/Wikipedia-logo-v2_1x.png">
</div>
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Difference between staticmethod and classmethod
... code will help: Notice the difference in the call signatures of foo, class_foo and static_foo:
class A(object):
def foo(self, x):
print "executing foo(%s, %s)" % (self, x)
@classmethod
def class_foo(cls, x):
print "executing class_foo(%s, %s)" % (cls, x)
@staticme...
How can I pass a member function where a free function is expected?
...)(void*, int, int), void* context) {
fptr(context, 17, 42);
}
void non_member(void*, int i0, int i1) {
std::cout << "I don't need any context! i0=" << i0 << " i1=" << i1 << "\n";
}
struct foo {
void member(int i0, int i1) {
std::cout << "memb...