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How to write a caption under an image?
...d to do all the work in CSS (and/or with other HTML tags). And you need an extra operation to make old versions of IE to recognize them even as dummy tags. So it is simpler to use div or span.
– Jukka K. Korpela
Apr 12 '12 at 19:54
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Is there shorthand for returning a default value if None in Python? [duplicate]
... I can say x ?? "" , which will give me x if x is not null, and the empty string if x is null. I've found it useful for working with databases.
...
Picking a random element from a set
...0% boost in speed, but YMMV. (Also, this compiles without having to add an extra return statement.)
Note that this code (and most other answers) can be applied to any Collection, not just Set. In generic method form:
public static <E> E choice(Collection<? extends E> coll, Random rand)...
Read/write to Windows registry using Java
... following code obtains the exact windows distribution from the registry:
String value = WinRegistry.readString (
WinRegistry.HKEY_LOCAL_MACHINE, //HKEY
"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion", //Key
"ProductName"); ...
Constructor overload in TypeScript
...e(birthday),
gender,
);
}
constructor(
public fullName: string,
public age: number,
public gender: 'M' | 'F',
) {}
toString(): string {
return `Hello, my name is ${this.fullName} and I'm a ${this.age}yo ${this.gender}`;
}
}
interface PersonData {
first: strin...
How to select rows from a DataFrame based on column values?
...orm the same boolean analysis we did above. This leaves us performing one extra step to accomplish the same task.
mask = df['A'] == 'foo'
pos = np.flatnonzero(mask)
df.iloc[pos]
A B C D
0 foo one 0 0
2 foo two 2 4
4 foo two 4 8
6 foo one 6 12
7 foo three ...
How to identify CAAnimation within the animationDidStop delegate?
...for this very purpose. Just take out the call to setValue and move the key string to the addAnimation call. For example:
[[hearingAidHalo layer] addAnimation:animation forKey:@"Throb"];
Then, in your animationDidStop callback, you can do something like:
if (theAnimation == [[hearingAidHalo layer...
Detect if a page has a vertical scrollbar?
...
lol yeah I was debating whether or not to make the extra effort to write it because in many cases it's not needed.
– Andy E
Jan 27 '10 at 13:08
1
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PHP convert XML to JSON
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Json & Array from XML in 3 lines:
$xml = simplexml_load_string($xml_string);
$json = json_encode($xml);
$array = json_decode($json,TRUE);
share
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Why does javascript replace only first instance when using replace? [duplicate]
...C#/.NET class library (and most other sensible languages), when you pass a String in as the string-to-match argument to the string.replace method, it doesn't do a string replace. It converts the string to a RegExp and does a regex substitution. As Gumbo explains, a regex substitution requires the g...