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If table exists drop table then create it, if it does not exist just create it
..., 'table2'; and DROP VIEW IF EXISTS 'view1', 'view2'; PS- What witchcraft did you use to have `s in inline code!?
– Campbeln
Mar 3 '16 at 23:32
...
How to check if a number is between two values?
...ted in the comments –
…Function.prototype.apply() is slow! Besides calling it when you have a fixed amount of arguments is pointless…
it was worth removing the use of Function.prototype.apply(), which yields the amended versions of the above methods, firstly without the 'inclusive' optio...
How to solve “Could not establish trust relationship for the SSL/TLS secure channel with authority”
...ould add a handler to the ServicePointManager's ServerCertificateValidationCallback on the client side:
System.Net.ServicePointManager.ServerCertificateValidationCallback +=
(se, cert, chain, sslerror) =>
{
return true;
};
but be aware that this is not a good pr...
What exactly is Type Coercion in Javascript?
...integers, you get an error:
>>> "hi" + 10
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: cannot concatenate 'str' and 'int' objects
Yet in JavaScript, you don't. The 10 gets converted to a string:
> "hi" + 10
"hi10"
"Type coercion" i...
React.js - input losing focus when rerendering
I am just writing to text input and in onChange event i call setState , so React rerenders my UI. The problem is that the text input always lose a focus, so i need focus it again for each letter :D.
...
Concurrent vs serial queues in GCD
...der of task differs each time
threads are created as necessarily automatically.Task are executed in parallel. With more than
that(maxConcurrentOperationCount) is reached, some tasks will behave
as a serial until a thread is free.
func doLongSyncTaskInConcurrentQueue() {
let concurrentQueu...
How to programmatically get iOS status bar height
...lues. Is it possible to figure out the height of the status bar programmatically?
14 Answers
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Comparison of DES, Triple DES, AES, blowfish encryption for data
...competition involving hundreds of cryptographers during several years. Basically, you cannot have better than that.
So, when in doubt, use AES.
Note that a block cipher is a box which encrypts "blocks" (128-bit chunks of data with AES). When encrypting a "message" which may be longer than 128 bit...
How does variable assignment work in JavaScript?
...
Maybe strings aren't technically of the javascript type "Object", but they can be thought of objects in the OO sense.
– Alex Wayne
Feb 4 '09 at 1:13
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Delete directories recursively in Java
... longer there, it must have already been deleted, which means that, semantically, the delete did not fail - it had nothing to do. And if it failed for some other reason, it was not because the file was not found.
– Lawrence Dol
Apr 23 '09 at 3:43
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