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How do I iterate over an NSArray?
...ss the objects by index, you can run into strange exceptions or off-by-one errors (often long after the problem has occurred) that can be horrific to debug. Enumeration using one of the standard idioms has a "fail-fast" behavior, so the problem (caused by incorrect code) will manifest itself immedia...
Comparing boxed Long values 127 and 128
I want to compare two Long objects values using if conditions. When these values are less than 128 , the if condition works properly, but when they are greater than or equal to 128 , comparison fails.
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Run MySQLDump without Locking Tables
...mp restore faster. This is not a correct answer.
– dr_
Nov 4 '16 at 10:51
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Accessing an SQLite Database in Swift
...?
guard sqlite3_open(fileURL.path, &db) == SQLITE_OK else {
print("error opening database")
sqlite3_close(db)
db = nil
return
}
Note, I know it seems weird to close the database upon failure to open, but the sqlite3_open documentation makes it explicit that we must do so to avo...
Python 2.7 getting user input and manipulating as string without quotations
...ter a number: ")) #integer input
If you enter a string for int cast ValueError: invalid literal for int() with base 10:
x = float(input("Enter a float number: ")) #float input
If you enter a string for float cast ValueError: could not convert string to float
x = eval(input("Enter a float numbe...
MongoDB数据导出导入工具：mongoexport,mongoimport - 大数据 & AI - 清泛...
... upsert. You should make sure this is indexed
--stopOnError stop importing at first error rather than continuing
--jsonArray load a json array, not one item per line. Currently limited to 4MB.
参数说明：
-h:指明数据库宿主机的IP
-u:指明...
How to re-sign the ipa file?
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You may got an warning / error on --resource-rules parameters, which have been deprecated in OS X Yosemite (10.10), simply delete this parameter solve this issue.
– ıɾuǝʞ
Dec 17 '14 at 10:25
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How to create the branch from specific commit in different branch
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GauthierGauthier
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How to assert output with nosetest/unittest in python?
... pep8radius. Recently however, I had used this again and get the following error when printing TypeError: unicode argument expected, got 'str' (the type passed to print (str/unicode) is irrelevant).
– Andy Hayden
Oct 11 '14 at 4:24
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typeof !== “undefined” vs. != null
...have been declared before:
if(typeof neverDeclared === "undefined") // no errors
if(neverDeclared === null) // throws ReferenceError: neverDeclared is not defined
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