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Javascript - removing undefined fields from an object [duplicate]
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To remove undefined props in an object we use like this
JSON.parse(JSON.stringify(obj));
Output: {a: 1, c: 3}
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Getting file size in Python? [duplicate]
...urn os.stat(filename).st_size TypeError: stat() argument 1 must be encoded string without NULL bytes, not str`
– 6966488-1
Jul 6 '11 at 5:39
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Read only the first line of a file?
How would you get only the first line of a file as a string with Python?
8 Answers
8
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How do I center text horizontally and vertically in a TextView?
...out_height="match_parent"
android:gravity="center"
android:text="@string/**yourtextstring**"
/>
You can also use gravity center_vertical or center_horizontal according to your need.
and as @stealthcopter commented
in java: .setGravity(Gravity.CENTER);
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How to disable an Android button?
...ontent"
android:layout_width="wrap_content"
android:text="@string/button_text"
android:clickable = "false" />
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How do I get the time difference between two DateTime objects using C#?
...display the difference, do something like this:Console.WriteLine((a - b).ToString(@"hh\:mm\:ss")). See: MSDN Custom TimeSpan Format
– ishmael
Nov 5 '12 at 20:07
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What's up with Java's “%n” in printf?
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%n is portable across platforms
\n is not.
See the formatting string syntax in the reference documentation:
'n' line separator The result is the
platform-specific line separator
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Performant Entity Serialization: BSON vs MessagePack (vs JSON)
...include <msgpack.hpp>
class myclass {
private:
std::string str;
std::vector<int> vec;
public:
// This macro enables this class to be serialized/deserialized
MSGPACK_DEFINE(str, vec);
};
int main(void) {
// serialize
my...
What is the better API to Reading Excel sheets in java - JXL or Apache POI [closed]
...sn't support rich text formatting, i.e. different formatting within a text string; Apache POI does support it.
JXL only supports certain text rotations: horizontal/vertical, +/- 45 degrees, and stacked; Apache POI supports any integer number of degrees plus stacked.
JXL doesn't support drawing shape...
Checking if form has been submitted - PHP
...e steps:
Generate a unique token (you can use hash) Ex:
$token = hash (string $algo , string $data [, bool $raw_output = FALSE ] );
Assign this token to a session variable. Ex:
$_SESSION['form_token'] = $token;
Add a hidden input to submit the token. Ex:
input type="hidden" name="token" va...