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Convert blob to base64
...eader.result);
};
});
};
For using this helper function you should set a callback, example:
blobToBase64(blobData).then(res => {
// do what you wanna do
console.log(res); // res is base64 now
});
I write this helper function for my problem on React Native project, I wanted to dow...
Is it better to use std::memcpy() or std::copy() in terms to performance?
...some sort of OS activity going on. I decided to start over.
Same compiler settings and flags. There is only one version of MD5, and it's faster than SHA-2, so I did 3000 loops on a similar set of 5 test strings.
These are my final 10 results:
Time (in seconds) to complete run of MD5 tests
std::c...
Performance of FOR vs FOREACH in PHP
...tly the explanation I was looking for, thanks.
– hardsetting
Sep 13 '15 at 10:07
This answer should really be a suppli...
How to print out the method name and line number and conditionally disable NSLog?
...e DLog(...)
#endif
// ALog always displays output regardless of the DEBUG setting
#define ALog(fmt, ...) NSLog((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__)
The DLog macro is used to only output when the DEBUG variable is set (-DDEBUG in the projects's C flags for the debu...
How can I grep for a string that begins with a dash/hyphen?
...ilt-ins and Linux and GNU commands handle -- as an option terminator. Use 'set -x' to see the commands and arguments that Bash uses before they will be executed, but after Bash has expanded escapes, globs, and braces. Grep is a confusing example because it does its own handling of backslash escapes....
How can I scale an image in a CSS sprite
...dth:20px; height:20px; overflow:hidden; position:relative">
<!-- set width/height proportionally, to scale the sprite image -->
<img src="sprite.png" alt="icon"
width="20" height="80"
style="position:absolute; top: -20px; left: 0;" />
</div>
This way,...
What are the differences between a multidimensional array and an array of arrays in C#?
...ons which are always slower.
Consider the following methods:
static void SetElementAt(int[][] array, int i, int j, int value)
{
array[i][j] = value;
}
static void SetElementAt(int[,] array, int i, int j, int value)
{
array[i, j] = value;
}
Their IL will be the following:
.method privat...
How to use a wildcard in the classpath to add multiple jars? [duplicate]
...it's impossible to have a single, correct CLASSPATH that works for all.
I set CLASSPATH for each project using either an IDE or Ant. I do a lot of web development, so each WAR and EAR uses their own CLASSPATH.
It's ignored by IDEs and app servers. Why do you have it? I'd recommend deleting it.
...
Libraries not found when using CocoaPods with iOS logic tests
... should be the accepted answer since this is the official CocoaPods way to setup Pods with multiple targets. Thx a lot Keith!
– cschuff
Aug 20 '14 at 16:22
...
Pandas read_csv low_memory and dtype options
...h column is very memory demanding. Pandas tries to determine what dtype to set by analyzing the data in each column.
Dtype Guessing (very bad)
Pandas can only determine what dtype a column should have once the whole file is read. This means nothing can really be parsed before the whole file is read ...