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Git flow release branches and tags - with or without “v” prefix
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https://semver.org/#is-v123-a-semantic-version
Is “v1.2.3” a semantic version? No, “v1.2.3” is not a semantic
version. However, prefixing a semantic version with a “v” is a common
way (in English) to indicate it is a version numb...
ViewParam vs @ManagedProperty(value = “#{param.id}”)
...userConverter"). Invoking page by http://example.com/context/user.xhtml?id=123 will pass the id parameter through the converter and set the User object as a bean property.
@ManagedProperty:
Sets the value immediately after bean's construction.
Set value is available during @PostConstruct which al...
Fastest way to convert Image to Byte array
...System.Byte[]' to type 'System.Drawing.Image'.
– user123
Jun 18 '14 at 12:26
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List comprehension vs map
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10000 loops, best of 3: 181/118/123 usec per loop ^^^^^^^^^^^^^^^^^^
for list(<generator>), probably optimized
% python3 -mtimeit -s 'xs=range(1000)' 'f=lambda x:x' 'z=list(f(x) for x in xs)' ...
How to check if an object is nullable?
...t { return true; }
}
then
static void Main(string[] args)
{
int a = 123;
int? b = null;
object c = new object();
object d = null;
int? e = 456;
var f = (int?)789;
bool result1 = ValueTypeHelper.IsNullable(a); // false
bool result2 = ValueTypeHelper.IsNullable(b); /...
Refresh image with a new one at the same url
...ing javascript to change your image's 'src' property from (e.g.) image.jpg#123 to image.jpg#124 (or whatever, so long as the bit after the '#' changes). Could you clarify what it is you're reloading, and why?
– Doin
Dec 26 '15 at 20:28
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How do you unit test private methods?
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123
If you are using .net, you should use the InternalsVisibleToAttribute.
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Iterate over the lines of a string
...ingIO. See docs.python.org/3/library/io.html
– Attila123
Dec 13 '18 at 11:09
1
Using StringIO is ...
What does “%.*s” mean in printf?
...
123
You can use an asterisk (*) to pass the width specifier/precision to printf(), rather than har...
How can I check if character in a string is a letter? (Python)
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You can use str.isalpha().
For example:
s = 'a123b'
for char in s:
print(char, char.isalpha())
Output:
a True
1 False
2 False
3 False
b True
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