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How to assign a Git SHA1's to a file without Git?
...having Git installed. Note that "\0" is the NULL-byte, not a two-character string.
For example, the hash of an empty file:
sha1("blob 0\0") = "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391"
$ touch empty
$ git hash-object empty
e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
Another example:
sha1("blob 7\...
asp.net mvc: why is Html.CheckBox generating an additional hidden input
...rough to change it. Same goes with any other property, default value for a string is null. If you don't send a value it's null. In your example of setting a property to true in the constructor, that's honestly a bad design decision and it now comes to light because of how checkboxes work in http lan...
How to use Jackson to deserialise an array of objects
...
In response to my own comment above, first parse the json string to a jsonNode and then access the property of the array like this: JsonNode jsonNode = MAPPER.readTree(json); String arrayString = jsonNode.get("data").toString(); Then follow @Programmer Bruce's instructions above. Li...
Getting a slice of keys from a map
...
For example,
package main
func main() {
mymap := make(map[int]string)
keys := make([]int, 0, len(mymap))
for k := range mymap {
keys = append(keys, k)
}
}
To be efficient in Go, it's important to minimize memory allocations.
...
Difference between path.normalize and path.resolve in Node.js
....normalize can handle any paths you might want to normalize and means only string manipulation of the path, while path.resolve will use the filesystem and current directory to resolve the path to an absolute path. This makes them behave quite different as path.normalize might be used on a path insid...
What are the differences between delegates and events?
... this way:
public class ArgsSpecial : EventArgs
{
public ArgsSpecial (string val)
{
Operation=val;
}
public string Operation {get; set;}
}
public class Animal
{
// Empty delegate. In this way you are sure that value is always != null
// because no one outside of ...
Why use sprintf function in PHP?
...tf which means you can do much more than just inserting variable values in strings.
For instance, specify number format (hex, decimal, octal), number of decimals, padding and more. Google for printf and you'll find plenty of examples. The wikipedia article on printf should get you started.
...
Why does changing 0.1f to 0 slow down performance by 10x?
...ormance!!!
Denormal (or subnormal) numbers are kind of a hack to get some extra values very close to zero out of the floating point representation. Operations on denormalized floating-point can be tens to hundreds of times slower than on normalized floating-point. This is because many processors ca...
Can a dictionary be passed to django models on create?
... your second question, the dictionary has to be the final argument. Again, extra and extra2 should be fields in the model.
m2 =MyModel(extra='hello', extra2='world', **data_dict)
m2.save()
share
|
...
How to set host_key_checking=false in ansible inventory file?
...rgs='-o StrictHostKeyChecking=no'
host:
Add the following.
ansible_ssh_extra_args='-o StrictHostKeyChecking=no'
hosts/inventory options will work with connection type ssh and not paramiko. Some people may strongly argue that inventory and hosts is more secure because the scope is more limited....