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How to check file MIME type with javascript before upload?
...d see three remote images of different types displayed. At the top you can select a local image or data file, and the file signature and/or MIME type will be displayed.
Notice that even if an image is renamed, its true MIME type can be determined. See below.
Screenshot
// Return the first...
SQL - many-to-many table primary key
...es are read far more often than written. That makes anything you do on the select side far more relevant than anything on the insert side.
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GIT commit as different user without email / or only email
... <>" -m "Impersonation is evil."
I ran in to this when trying to convert a repository from mercurial to git.
I tested the commands on msysgit 1.7.10.
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Paste a multi-line Java String in Eclipse [duplicate]
...iline string, for example:
String name="zzg";
String lines = ""/**~!{
SELECT *
FROM user
WHERE name="$name"
}*/;
System.out.println(lines);
Output：
SELECT *
FROM user
WHERE name="zzg"
sha...
How do I force Sublime Text to indent two spaces per tab?
...e tab size from 1 space all the way up to 8 spaces and includes options to convert tabs to spaces and spaces to tabs.
Looks like this:
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Using multiple arguments for string formatting in Python (e.g., '%s … %s')
...SCII; in fact, unicode() tries to make "sense" of the bytes it is given by converting them into characters. Thus, the following code, which is essentially what is recommended by previous answers, fails on my machine:
# -*- coding: utf-8 -*-
author = 'éric'
print '{0}'.format(unicode(author))
gi...
How to get enum value by string or int
...
public static T GetEnumValue<T>(string str) where T : struct, IConvertible
{
Type enumType = typeof(T);
if (!enumType.IsEnum)
{
throw new Exception("T must be an Enumeration type.");
}
T val;
return Enum.TryParse<T>(st...
Reset AutoIncrement in SQL Server after Delete
... a column(column_name) from a table(table1), you can use following query
SELECT MAX(column_name) FROM table1
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read subprocess stdout line by line
...
Or to convert into strings: list_of_strings = [x.decode('utf-8').rstrip('\n') for x in iter(process.stdout.readlines())]
– ndtreviv
Nov 28 '19 at 11:10
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How does !!~ (not not tilde/bang bang tilde) alter the result of a 'contains/included' Array method
...expr != -1, only broken*
It works because JavaScript bitwise operations convert the operands to 32-bit signed integers in two's complement format. Thus !!~-1 is evaluated as follows:
-1 = 1111 1111 1111 1111 1111 1111 1111 1111b // two's complement representation of -1
~-1 = 0000 0000 0000 ...