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When should I use Write-Error vs. Throw? Terminating vs. non-terminating errors
... if you want to inform the user of a non-critical error. By default all it does is print an error message in red text on the console. It does not stop a pipeline or a loop from continuing. Throw on the other hand produces what is called a terminating error. If you use throw, the pipeline and/or curr...
Order data frame rows according to vector with specific order
...ike to match has repeat values? like b,c,a,d,b,c,a,d. I tried match but it does not work well.
– Yulong
Aug 21 '13 at 15:35
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image.onload event and browser cache
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Wait. Why does your second code example do the wrong thing and set .src before setting .onload? You had it right in the first code example, but messed up the second one. The second one will not work properly in some versions of IE.
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Using Core Data, iCloud and CloudKit for syncing and backup and how it works together
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It's like this:
Core Data on its own, is completely local and does not automatically work with any of Apple's cloud services.
Core Data with iCloud enabled turns on syncing via iCloud. Any changes you save in Core Data are propagated to the cloud, and any changes made in the cloud are a...
How to convert floats to human-readable fractions?
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Be aware that there are some edge cases that this code does not handle very welll: when given -1.3333333 with a maximum denominator of 4 it returns 4/-3 with an error of 3.333333e-08 and -5/4 with an error = -8.333330e-02, which is correct. But when given -1.33333337 with the sa...
Mocking Extension Methods with Moq
...t I found three issues when I trialed it that stopped me using it... 1) It doesn't run in the Resharper NUnit runner 2) You need to manually create a mole assembly for each stubbed assembly 3) You need to manually recreate a mole assembly whenever a stubbed method changes.
– Ru...
Has reCaptcha been cracked / hacked / OCR'd / defeated / broken? [closed]
...because they didnt OCR the images (though this could also have been done), doesnt mean they didnt break reCAPTCHA. Think about it like this: Is the purpose of reCAPTCHA to present undecipherable images? Or is it to prevent automated flooding? If its the first, you might be able to argue that it was ...
What are the differences between the BLOB and TEXT datatypes in MySQL?
...se ObjectIds to identify data uniquely. Since the SQLLite (RDBMS world ) does Not have any direct way of representing MongoDB ObjectIds, I was wondering if I could store ObjectIds as BLOB types. Does that sound like a reasonably solution? Would it slow performance? Would there be any other Drawb...
Django: How to manage development and production settings?
...ttings.
Note that you can run this export at any time from a shell — it does not need to live in your .bashrc or anything.
Setting DJANGO_SETTINGS_MODULE using a Process Manager
If you're not fond of writing a bootstrap script that sets the environment (and there are very good reasons to feel t...
Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '=
...unicode_ci |
Note the line 'col1' varchar(4) CHARACTER SET utf8 NOT NULL does not have a collation specified. I then ran the following query:
ALTER TABLE table1 CHANGE col1 col1 VARCHAR(4) CHARACTER SET utf8
COLLATE utf8_unicode_ci NOT NULL;
This solved my "Illegal mix of collations" error. Hop...